diff --git a/libavutil/mathematics.h b/libavutil/mathematics.h
index 4cc3b49aad..7a72ceff96 100644
--- a/libavutil/mathematics.h
+++ b/libavutil/mathematics.h
@@ -36,7 +36,7 @@
 #define M_LN10         2.30258509299404568402  /* log_e 10 */
 #endif
 #ifndef M_LOG2_10
-#define M_LOG2_10      3.32192809488736218171  /* log_2 10 */
+#define M_LOG2_10      3.32192809488736234787  /* log_2 10 */
 #endif
 #ifndef M_PI
 #define M_PI           3.14159265358979323846  /* pi */