1 files changed, 1 insertions, 1 deletions
diff --git a/configure b/configure
index 660141724d..900f832254 100755
--- a/configure
+++ b/configure
@@ -4751,7 +4751,7 @@ fi
 
 echocheck "PNM support"
 if test "$_pnm" = yes; then
-  _def_pnm="#define CONFIG_PNM"
+  _def_pnm="#define CONFIG_PNM 1"
   _vosrc="$_vosrc vo_pnm.c"
   _vomodules="pnm $_vomodules"
 else