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-rw-r--r--editor/pnmconvol.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/editor/pnmconvol.c b/editor/pnmconvol.c
index 365f7931..031feb66 100644
--- a/editor/pnmconvol.c
+++ b/editor/pnmconvol.c
@@ -17,6 +17,7 @@
 
 /* A change history is at the bottom */
 
+#include "pm_c_util.h"
 #include "pnm.h"
 #include "shhopt.h"
 #include "mallocvar.h"