diff --git a/cif/cif.h b/cif/cif.h
index 464ca94c..dd013caf 100644
--- a/cif/cif.h
+++ b/cif/cif.h
@@ -69,7 +69,6 @@ extern void CIFParseReadLayers();
 extern float CIFGetOutputScale();
 extern float CIFGetScale();
 extern float CIFGetInputScale();
-extern int CIFGetDefaultContactSize();
 
 extern int CIFPaintCurrent();
 extern void CIFSeeLayer();