diff --git a/source/compiler/sc.h b/source/compiler/sc.h
index 1b94f48..caffea0 100644
--- a/source/compiler/sc.h
+++ b/source/compiler/sc.h
@@ -50,7 +50,7 @@
 #define CTRL_CHAR   '\\'    /* default control character */
 #define sCHARBITS   8       /* size of a packed character */
 
-#define sDIMEN_MAX     3    /* maximum number of array dimensions */
+#define sDIMEN_MAX     4    /* maximum number of array dimensions */
 #define sLINEMAX    4095    /* input line length (in characters) */
 #define sCOMP_STACK   32    /* maximum nesting of #if .. #endif sections */
 #define sDEF_LITMAX  500    /* initial size of the literal pool, in "cells" */