diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 8a308bea68..866fc41542 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -58,9 +58,6 @@ static void dct_unquantize_h263_inter_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale);
 
 
-/* enable all paranoid tests for rounding, overflows, etc... */
-//#define PARANOID
-
 //#define DEBUG
 
 
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index d942fdd840..632ed32be4 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -57,9 +57,6 @@ static int sse_mb(MpegEncContext *s);
 static void denoise_dct_c(MpegEncContext *s, DCTELEM *block);
 static int dct_quantize_trellis_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
 
-/* enable all paranoid tests for rounding, overflows, etc... */
-//#define PARANOID
-
 //#define DEBUG
 
 static uint8_t default_mv_penalty[MAX_FCODE + 1][MAX_MV * 2 + 1];
diff --git a/libavcodec/x86/mpegvideo.c b/libavcodec/x86/mpegvideo.c
index 7c7ca87a13..325eca263a 100644
--- a/libavcodec/x86/mpegvideo.c
+++ b/libavcodec/x86/mpegvideo.c
@@ -166,14 +166,6 @@ __asm__ volatile(
 
 
 /*
-  NK:
-  Note: looking at PARANOID:
-  "enable all paranoid tests for rounding, overflows, etc..."
-
-#ifdef PARANOID
-                if (level < -2048 || level > 2047)
-                    fprintf(stderr, "unquant error %d %d\n", i, level);
-#endif
   We can suppose that result of two multiplications can't be greater than 0xFFFF
   i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
   a complex multiplication.