diff --git a/src/files.c b/src/files.c
index 394854c6c..ce62db20f 100644
--- a/src/files.c
+++ b/src/files.c
@@ -2138,18 +2138,21 @@ int		src;
 		return 0;
 	    }
 	    sysopt.pointsmin = temp;
-#ifdef PANICTRACE_GLIBC
-	} else if ( (src==SET_IN_SYS) && match_varname(buf, "PANICTRACE_GLIBC", 16)) {
+# ifdef PANICTRACE
+#  ifdef PANICTRACE_GLIBC
+	} else if (src == SET_IN_SYS &&
+		match_varname(buf, "PANICTRACE_GLIBC", 16)) {
 	    int temp = atoi(bufp);
-	    if(temp < 1 || temp > 2){
+	    if (temp < 0 || temp > 2) {
 		raw_printf("Illegal value in PANICTRACE_GLIBC (not 0,1,2).");
 		return 0;
 	    }
 	    sysopt.panictrace_glibc = temp;
-#endif
-	} else if ( (src==SET_IN_SYS) && match_varname(buf, "PANICTRACE_GDB", 14)) {
+#  endif /* PANICTRACE_GLIBC */
+	} else if (src == SET_IN_SYS &&
+		match_varname(buf, "PANICTRACE_GDB", 14)) {
 	    int temp = atoi(bufp);
-	    if(temp < 1 || temp > 2){
+	    if (temp < 0 || temp > 2) {
 		raw_printf("Illegal value in PANICTRACE_GDB (not 0,1,2).");
 		return 0;
 	    }
@@ -2162,7 +2165,8 @@ int		src;
 	    if(sysopt.greppath) free(sysopt.greppath);
 	    sysopt.greppath = (char*)alloc(strlen(bufp)+1);
 	    Strcpy(sysopt.greppath, bufp);
-#endif
+# endif /* PANICTRACE */
+#endif /* SYSCF */
 	} else if (match_varname(buf, "BOULDER", 3)) {
 	    (void) get_uchars(fp, buf, bufp, &iflags.bouldersym, TRUE,
 			      1, "BOULDER");