diff --git a/calma/CalmaWrite.c b/calma/CalmaWrite.c
index 6809b98d..9b0987a8 100644
--- a/calma/CalmaWrite.c
+++ b/calma/CalmaWrite.c
@@ -83,7 +83,6 @@ int  CalmaCompression = 0;	/* Output file compression level (0 = uncompressed) *
 
     /* Forward declarations */
 extern int calmaWriteInitFunc();
-extern int calmaWriteMarkFunc();
 extern int calmaWritePaintFunc();
 extern int calmaMergePaintFunc();
 extern int calmaWriteUseFunc();
diff --git a/calma/CalmaWriteZ.c b/calma/CalmaWriteZ.c
index 80d0dbdb..42d60af9 100644
--- a/calma/CalmaWriteZ.c
+++ b/calma/CalmaWriteZ.c
@@ -91,7 +91,6 @@ extern int calmaPaintLayerType;
 
     /* External functions from CalmaWrite.c */
 extern int calmaWriteInitFunc();
-extern int calmaWriteMarkFunc();
 
     /* Forward declarations */
 extern int calmaWritePaintFuncZ();