diff -urNd gsview-4.9/src/gvcver.h gsview-4.9-rev/src/gvcver.h
--- gsview-4.9/src/gvcver.h	2007-11-18 11:13:24.000000000 +1000
+++ gsview-4.9-rev/src/gvcver.h	2020-09-30 13:11:08.897457314 +1000
@@ -58,7 +58,7 @@
 #define GS_PRODUCT  "AFPL Ghostscript"
 #define GS_REVISION_MIN   704
 #define GS_REVISION	  704
-#define GS_REVISION_MAX   999
+#define GS_REVISION_MAX   9999
 
 #ifdef _Windows
 #ifdef _WIN64