diff --git a/configure b/configure
index c9c48165b6..3a47fcd64e 100755
--- a/configure
+++ b/configure
@@ -2655,6 +2655,7 @@ print_config CONFIG_ $TMPH config.mak $CONFIG_LIST       \
 echo "#define restrict $_restrict" >> $TMPH
 
 if enabled small; then
+    echo "#undef av_always_inline"  >> $TMPH
     echo "#define av_always_inline"  >> $TMPH
 fi