diff --git a/libavutil/integer.c b/libavutil/integer.c
index 89e6d50124..55dde412d4 100644
--- a/libavutil/integer.c
+++ b/libavutil/integer.c
@@ -156,7 +156,7 @@ int64_t av_i2int(AVInteger a){
     return out;
 }
 
-#if 0
+#ifdef TEST
 #undef NDEBUG
 #include <assert.h>
 
diff --git a/libavutil/mathematics.c b/libavutil/mathematics.c
index 2ea35fc4f3..71d8ba7b1a 100644
--- a/libavutil/mathematics.c
+++ b/libavutil/mathematics.c
@@ -110,7 +110,8 @@ int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq){
     int64_t c= cq.num * (int64_t)bq.den;
     return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
 }
-#if 0
+
+#ifdef TEST
 #include "integer.h"
 #undef printf
 main(void){