diff --git a/programs/fuzz/fuzz_client.c b/programs/fuzz/fuzz_client.c
index 607a8d2b7..ca7a8ab7c 100644
--- a/programs/fuzz/fuzz_client.c
+++ b/programs/fuzz/fuzz_client.c
@@ -5,12 +5,11 @@
 #include "common.h"
 #include <string.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <stdint.h>
 
 
 #ifdef MBEDTLS_SSL_CLI_C
-static bool initialized = 0;
+static int initialized = 0;
 #if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
 static mbedtls_x509_crt cacert;
 #endif
diff --git a/programs/fuzz/fuzz_dtlsclient.c b/programs/fuzz/fuzz_dtlsclient.c
index 7de835674..8197a6484 100644
--- a/programs/fuzz/fuzz_dtlsclient.c
+++ b/programs/fuzz/fuzz_dtlsclient.c
@@ -1,6 +1,5 @@
 #include <string.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <stdint.h>
 #include "common.h"
 #include "mbedtls/ssl.h"
@@ -12,7 +11,7 @@
 
 
 #ifdef MBEDTLS_SSL_CLI_C
-static bool initialized = 0;
+static int initialized = 0;
 #if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
 static mbedtls_x509_crt cacert;
 #endif
diff --git a/programs/fuzz/fuzz_dtlsserver.c b/programs/fuzz/fuzz_dtlsserver.c
index ec08f79ca..9e9fe8ebd 100644
--- a/programs/fuzz/fuzz_dtlsserver.c
+++ b/programs/fuzz/fuzz_dtlsserver.c
@@ -1,6 +1,5 @@
 #include <string.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <stdint.h>
 #include "common.h"
 #include "mbedtls/ssl.h"
@@ -15,7 +14,7 @@
 #ifdef MBEDTLS_SSL_SRV_C
 const char *pers = "fuzz_dtlsserver";
 const unsigned char client_ip[4] = {0x7F, 0, 0, 1};
-static bool initialized = 0;
+static int initialized = 0;
 #if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
 static mbedtls_x509_crt srvcert;
 static mbedtls_pk_context pkey;
diff --git a/programs/fuzz/fuzz_server.c b/programs/fuzz/fuzz_server.c
index 94c80f6c3..7cb592238 100644
--- a/programs/fuzz/fuzz_server.c
+++ b/programs/fuzz/fuzz_server.c
@@ -6,13 +6,12 @@
 #include "common.h"
 #include <string.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <stdint.h>
 
 
 #ifdef MBEDTLS_SSL_SRV_C
 const char *pers = "fuzz_server";
-static bool initialized = 0;
+static int initialized = 0;
 #if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
 static mbedtls_x509_crt srvcert;
 static mbedtls_pk_context pkey;
diff --git a/programs/fuzz/onefile.c b/programs/fuzz/onefile.c
index c5361b310..9e3986d6b 100644
--- a/programs/fuzz/onefile.c
+++ b/programs/fuzz/onefile.c
@@ -1,6 +1,8 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
+// Get platform-specific definition
+#include "mbedtls/config.h"
 
 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);