diff --git a/libavutil/pca.c b/libavutil/pca.c
index 5d22f4d230..8c84c450a6 100644
--- a/libavutil/pca.c
+++ b/libavutil/pca.c
@@ -152,6 +152,7 @@ int ff_pca(PCA *pca, double *eigenvector, double *eigenvalue){
 #if 1
 
 #undef printf
+#undef random
 #include <stdio.h>
 #include <stdlib.h>