diff --git a/compat/getopt.c b/compat/getopt.c
index dd082ea2e6..9a9c5421de 100644
--- a/compat/getopt.c
+++ b/compat/getopt.c
@@ -38,8 +38,6 @@ static int optind = 1;
 static int optopt;
 static char *optarg;
 
-#undef fprintf
-
 static int getopt(int argc, char *argv[], char *opts)
 {
     static int sp = 1;
diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c
index be00c4bb96..f323366c5f 100644
--- a/libavcodec/dct-test.c
+++ b/libavcodec/dct-test.c
@@ -47,8 +47,6 @@
 #include "x86/idct_xvid.h"
 #include "dctref.h"
 
-#undef printf
-
 // BFIN
 void ff_bfin_idct(int16_t *block);
 void ff_bfin_fdct(int16_t *block);
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index 4ce40aac83..b8b414343d 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -34,8 +34,6 @@
 #define cm (ff_cropTbl + MAX_NEG_CROP)
 
 #ifdef DEBUG
-#undef fprintf
-#undef perror
 #if 0
 static void png_save(const char *filename, uint8_t *bitmap, int w, int h,
                      uint32_t *rgba_palette)
diff --git a/libavcodec/dvdsubdec.c b/libavcodec/dvdsubdec.c
index 87afc1e7ba..3f8c3650ba 100644
--- a/libavcodec/dvdsubdec.c
+++ b/libavcodec/dvdsubdec.c
@@ -462,9 +462,6 @@ static int find_smallest_bounding_rectangle(AVSubtitle *s)
 }
 
 #ifdef DEBUG
-#undef fprintf
-#undef perror
-#undef exit
 static void ppm_save(const char *filename, uint8_t *bitmap, int w, int h,
                      uint32_t *rgba_palette)
 {