diff --git a/mongoose.h b/mongoose.h
index 0e61546a..9b54a41a 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -1547,6 +1547,8 @@ typedef struct stat cs_stat_t;
 #define MG_ENABLE_FILESYSTEM 1
 #endif
 
+#define CS_DEFINE_DIRENT
+
 #endif /* CS_PLATFORM == CS_P_STM32 */
 #endif /* CS_COMMON_PLATFORMS_PLATFORM_STM32_H_ */
 #ifdef MG_MODULE_LINES