diff --git a/libavutil/mem.c b/libavutil/mem.c
index 4e654b044c..8062ae81cb 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -140,8 +140,7 @@ void *av_mallocz(unsigned int size)
 char *av_strdup(const char *s)
 {
     char *ptr;
-    int len;
-    len = strlen(s) + 1;
+    int len = strlen(s) + 1;
     ptr = av_malloc(len);
     if (ptr)
         memcpy(ptr, s, len);