diff -U 3 -H -d -r -N -x .git -x .svn -- gnuplot-4.6.0/src/gplt_x11.c gnuplot-4.6.0.formaterrors/src/gplt_x11.c
--- gnuplot-4.6.0/src/gplt_x11.c	2011-12-28 23:00:37.000000000 +0100
+++ gnuplot-4.6.0.formaterrors/src/gplt_x11.c	2012-03-15 12:17:24.311767033 +0100
@@ -2897,22 +2897,22 @@
 
 		    case PseudoColor:
 			fprintf(stderr, ERROR_NOTICE("PseudoColor"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case GrayScale:
 			fprintf(stderr, ERROR_NOTICE("GrayScale"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case StaticColor:
 			fprintf(stderr, ERROR_NOTICE("StaticColor"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case StaticGray:
 			fprintf(stderr, ERROR_NOTICE("StaticGray"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case DirectColor: