1 files changed, 2 insertions, 2 deletions
diff --git a/src/utils/stringutils.cpp b/src/utils/stringutils.cpp
index e1486d91b..0b4e4180a 100644
--- a/src/utils/stringutils.cpp
+++ b/src/utils/stringutils.cpp
@@ -55,13 +55,13 @@ std::string &trim(std::string &str)
 
 std::string &toLower(std::string &str)
 {
-    std::transform(str.begin(), str.end(), str.begin(), tolower);
+    std::transform(str.begin(), str.end(), str.begin(), &tolower);
     return str;
 }
 
 std::string &toUpper(std::string &str)
 {
-    std::transform(str.begin(), str.end(), str.begin(), toupper);
+    std::transform(str.begin(), str.end(), str.begin(), &toupper);
     return str;
 }