diff --git a/cint/inc/G__ci.h b/cint/inc/G__ci.h
index 82095e96945ed86dea1df9f05cefbbaa1c551fe2..26ef179021fab80f57500d465301f350592e6f41 100644
--- a/cint/inc/G__ci.h
+++ b/cint/inc/G__ci.h
@@ -788,7 +788,7 @@ typedef int (*G__IgnoreInclude)();
 #define G__MAXNAME     4096  /* Variable name */
 #else
 #define G__LONGLINE    1024  /* Length of expression */
-#define G__ONELINE      256  /* Length of subexpression,parameter,argument */
+#define G__ONELINE      512  /* Length of subexpression,parameter,argument */
 #define G__MAXNAME      256  /* Variable name */
 #define G__ONELINEDICT    8  /* Length of subexpression,parameter,argument */
 #endif