Index: src/OFString.m
==================================================================
--- src/OFString.m
+++ src/OFString.m
@@ -1995,10 +1995,16 @@
 
 	characters = [self characters];
 
 	if (OF_IS_PATH_DELIMITER(characters[length - 1]))
 		length--;
+
+	if (length == 0) {
+		objc_autoreleasePoolPop(pool);
+
+		return @"";
+	}
 
 	for (i = length - 1; i >= 0; i--) {
 		if (OF_IS_PATH_DELIMITER(characters[i])) {
 			i++;
 			break;

Index: src/OFString_UTF8.m
==================================================================
--- src/OFString_UTF8.m
+++ src/OFString_UTF8.m
@@ -1125,10 +1125,13 @@
 	if (pathCStringLength == 0)
 		return @"";
 
 	if (OF_IS_PATH_DELIMITER(_s->cString[pathCStringLength - 1]))
 		pathCStringLength--;
+
+	if (pathCStringLength == 0)
+		return @"";
 
 	for (i = pathCStringLength - 1; i >= 0; i--) {
 		if (OF_IS_PATH_DELIMITER(_s->cString[i])) {
 			i++;
 			break;