diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c
index ac997981da..451e92da75 100644
--- a/libavcodec/dct-test.c
+++ b/libavcodec/dct-test.c
@@ -42,6 +42,7 @@
 #endif
 
 #undef printf
+#undef random
 
 void *fast_memcpy(void *a, const void *b, size_t c){return memcpy(a,b,c);};
 
diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index 5a79c88b0e..725a814ca8 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -31,6 +31,7 @@
 #include <string.h>
 
 #undef exit
+#undef random
 
 int mm_flags;
 
diff --git a/libavcodec/motion-test.c b/libavcodec/motion-test.c
index 76978e26a8..414c141de4 100644
--- a/libavcodec/motion-test.c
+++ b/libavcodec/motion-test.c
@@ -35,6 +35,7 @@
 
 #undef exit
 #undef printf
+#undef random
 
 #define WIDTH 64
 #define HEIGHT 64