diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index 1dfdbedb5..2821db46a 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -845,22 +845,22 @@ Base test mbedtls_mpi_mod_int #8 (By 2)
 mbedtls_mpi_mod_int:10:"1000":2:0:0
 
 Base test mbedtls_mpi_exp_mod #1
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"29":10:"":10:"24":0
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"29":10:"24":0
 
 Base test mbedtls_mpi_exp_mod #2 (Even N)
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"30":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"30":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #3 (Negative N)
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"-29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"-29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #4 (Negative base)
-mbedtls_mpi_exp_mod:10:"-23":10:"13":10:"29":10:"":10:"5":0
+mbedtls_mpi_exp_mod:10:"-23":10:"13":10:"29":10:"5":0
 
 Base test mbedtls_mpi_exp_mod #5 (Negative exponent)
-mbedtls_mpi_exp_mod:10:"23":10:"-13":10:"29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"-13":10:"29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #6 (Negative base + exponent)
-mbedtls_mpi_exp_mod:10:"-23":10:"-13":10:"29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"-23":10:"-13":10:"29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Test mbedtls_mpi_exp_mod: MAX_SIZE exponent
 mbedtls_mpi_exp_mod_size:2:MBEDTLS_MPI_MAX_SIZE:10:10:"":0
@@ -882,14 +882,14 @@ mbedtls_mpi_exp_mod_size:2:MBEDTLS_MPI_MAX_SIZE + 1:MBEDTLS_MPI_MAX_SIZE + 1:10:
 
 Test mbedtls_mpi_exp_mod #1
 depends_on:MPI_MAX_BITS_LARGER_THAN_792
-mbedtls_mpi_exp_mod:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"583137007797276923956891216216022144052044091311388601652961409557516421612874571554415606746479105795833145583959622117418531166391184939066520869800857530421873250114773204354963864729386957427276448683092491947566992077136553066273207777134303397724679138833126700957":10:"":10:"114597449276684355144920670007147953232659436380163461553186940113929777196018164149703566472936578890991049344459204199888254907113495794730452699842273939581048142004834330369483813876618772578869083248061616444392091693787039636316845512292127097865026290173004860736":0
+mbedtls_mpi_exp_mod:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"583137007797276923956891216216022144052044091311388601652961409557516421612874571554415606746479105795833145583959622117418531166391184939066520869800857530421873250114773204354963864729386957427276448683092491947566992077136553066273207777134303397724679138833126700957":10:"114597449276684355144920670007147953232659436380163461553186940113929777196018164149703566472936578890991049344459204199888254907113495794730452699842273939581048142004834330369483813876618772578869083248061616444392091693787039636316845512292127097865026290173004860736":0
 
 Test mbedtls_mpi_exp_mod (Negative base) [#1]
-mbedtls_mpi_exp_mod:10:"-10000000000":10:"10000000000":10:"99999":10:"":10:"1":0
+mbedtls_mpi_exp_mod:10:"-10000000000":10:"10000000000":10:"99999":10:"1":0
 
 Test mbedtls_mpi_exp_mod (Negative base) [#2]
 depends_on:MPI_MAX_BITS_LARGER_THAN_792
-mbedtls_mpi_exp_mod:16:"-9f13012cd92aa72fb86ac8879d2fde4f7fd661aaae43a00971f081cc60ca277059d5c37e89652e2af2585d281d66ef6a9d38a117e9608e9e7574cd142dc55278838a2161dd56db9470d4c1da2d5df15a908ee2eb886aaa890f23be16de59386663a12f1afbb325431a3e835e3fd89b98b96a6f77382f458ef9a37e1f84a03045c8676ab55291a94c2228ea15448ee96b626b998":16:"40a54d1b9e86789f06d9607fb158672d64867665c73ee9abb545fc7a785634b354c7bae5b962ce8040cf45f2c1f3d3659b2ee5ede17534c8fc2ec85c815e8df1fe7048d12c90ee31b88a68a081f17f0d8ce5f4030521e9400083bcea73a429031d4ca7949c2000d597088e0c39a6014d8bf962b73bb2e8083bd0390a4e00b9b3":16:"eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3":16:"":16:"21acc7199e1b90f9b4844ffe12c19f00ec548c5d32b21c647d48b6015d8eb9ec9db05b4f3d44db4227a2b5659c1a7cceb9d5fa8fa60376047953ce7397d90aaeb7465e14e820734f84aa52ad0fc66701bcbb991d57715806a11531268e1e83dd48288c72b424a6287e9ce4e5cc4db0dd67614aecc23b0124a5776d36e5c89483":0
+mbedtls_mpi_exp_mod:16:"-9f13012cd92aa72fb86ac8879d2fde4f7fd661aaae43a00971f081cc60ca277059d5c37e89652e2af2585d281d66ef6a9d38a117e9608e9e7574cd142dc55278838a2161dd56db9470d4c1da2d5df15a908ee2eb886aaa890f23be16de59386663a12f1afbb325431a3e835e3fd89b98b96a6f77382f458ef9a37e1f84a03045c8676ab55291a94c2228ea15448ee96b626b998":16:"40a54d1b9e86789f06d9607fb158672d64867665c73ee9abb545fc7a785634b354c7bae5b962ce8040cf45f2c1f3d3659b2ee5ede17534c8fc2ec85c815e8df1fe7048d12c90ee31b88a68a081f17f0d8ce5f4030521e9400083bcea73a429031d4ca7949c2000d597088e0c39a6014d8bf962b73bb2e8083bd0390a4e00b9b3":16:"eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3":16:"21acc7199e1b90f9b4844ffe12c19f00ec548c5d32b21c647d48b6015d8eb9ec9db05b4f3d44db4227a2b5659c1a7cceb9d5fa8fa60376047953ce7397d90aaeb7465e14e820734f84aa52ad0fc66701bcbb991d57715806a11531268e1e83dd48288c72b424a6287e9ce4e5cc4db0dd67614aecc23b0124a5776d36e5c89483":0
 
 Base test GCD #1
 mbedtls_mpi_gcd:10:"693":10:"609":10:"21"
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index 18ca6d249..b13428f91 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -1200,8 +1200,7 @@ exit:
 /* BEGIN_CASE */
 void mbedtls_mpi_exp_mod( int radix_A, char * input_A, int radix_E,
                           char * input_E, int radix_N, char * input_N,
-                          int radix_RR, char * input_RR, int radix_X,
-                          char * input_X, int div_result )
+                          int radix_X, char * input_X, int div_result )
 {
     mbedtls_mpi A, E, N, RR, Z, X;
     int res;
@@ -1213,9 +1212,6 @@ void mbedtls_mpi_exp_mod( int radix_A, char * input_A, int radix_E,
     TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
     TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
-    if( strlen( input_RR ) )
-        TEST_ASSERT( mbedtls_test_read_mpi( &RR, radix_RR, input_RR ) == 0 );
-
     res = mbedtls_mpi_exp_mod( &Z, &A, &E, &N, &RR );
     TEST_ASSERT( res == div_result );
     if( res == 0 )