diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index 0bd633b..06dd192 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -70,7 +70,9 @@
 #if !defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS)
 #include <stdio.h>
 #include <stdlib.h>
+#if defined(MBEDTLS_HAVE_TIME)
 #include <time.h>
+#endif
 #if !defined(MBEDTLS_PLATFORM_STD_SNPRINTF)
 #if defined(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_SNPRINTF)
 #define MBEDTLS_PLATFORM_STD_SNPRINTF   mbedtls_platform_win32_snprintf /**< The default \c snprintf function to use.  */