diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index e716318b1..c436fbb87 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -133,7 +133,7 @@ mbedtls_platform_context platform_ctx;
 static int platform_setup()
 {
 #if defined(MBEDTLS_PLATFORM_C)
-    if( mbedtls_platform_setup( &platform_ctx ) )
+    if( mbedtls_platform_setup( &platform_ctx ) != 0 )
     {
         return -1;
     }
diff --git a/tests/suites/main_test.function b/tests/suites/main_test.function
index e5b404358..8d7e47769 100644
--- a/tests/suites/main_test.function
+++ b/tests/suites/main_test.function
@@ -282,7 +282,7 @@ int main(int argc, const char *argv[])
     !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
     unsigned char alloc_buf[1000000];
 #endif 
-    if( platform_setup() )
+    if( platform_setup() != 0 )
     {
         mbedtls_fprintf( stderr, "FATAL: Failed to initialize platform" );
         return -1;