diff --git a/apps/codecs/a52.c b/apps/codecs/a52.c
index e3144fd2f9..fb881f8483 100644
--- a/apps/codecs/a52.c
+++ b/apps/codecs/a52.c
@@ -122,7 +122,7 @@ extern char iramend[];
 /* this is the codec entry point */
 enum codec_status codec_start(struct codec_api *api)
 {
-    size_t n;
+    long n;
     unsigned char *filebuf;
 
     /* Generic codec initialisation */
diff --git a/apps/codecs/mpa.c b/apps/codecs/mpa.c
index 66c181e74b..557274a637 100644
--- a/apps/codecs/mpa.c
+++ b/apps/codecs/mpa.c
@@ -72,7 +72,7 @@ void recalc_samplecount(void)
 enum codec_status codec_start(struct codec_api *api)
 {
     int status = 0;
-    size_t size;
+    long size;
     int file_end;
     int frame_skip;
     char *inputbuffer;
diff --git a/apps/codecs/wav.c b/apps/codecs/wav.c
index b1ac8272ee..ce3e48895c 100644
--- a/apps/codecs/wav.c
+++ b/apps/codecs/wav.c
@@ -213,7 +213,8 @@ enum codec_status codec_start(struct codec_api* api)
   int bytespersample=0;
   uint16_t bitspersample;
   uint32_t i;
-  size_t n, wavbufsize;
+  long n;
+  size_t wavbufsize;
   int endofstream;
   unsigned char* buf;
   uint16_t* wavbuf;