diff --git a/src/libs/utils/filenamevalidatinglineedit.cpp b/src/libs/utils/filenamevalidatinglineedit.cpp
index 8202f03baae..9fea015c5bf 100644
--- a/src/libs/utils/filenamevalidatinglineedit.cpp
+++ b/src/libs/utils/filenamevalidatinglineedit.cpp
@@ -98,7 +98,7 @@ void FileNameValidatingLineEdit::setForceFirstCapitalLetter(bool b)
 #define SLASHES "/\\"
 
 static const char notAllowedCharsSubDir[]   = ",^@=+{}[]~!?:&*\"|#%<>$\"'();`' ";
-static const char notAllowedCharsNoSubDir[] = ",^@=+{}[]~!?:&*\"|#%<>$\"'();`' " SLASHES;
+static const char notAllowedCharsNoSubDir[] = ",^@={}[]~!?:&*\"|#%<>$\"'();`' " SLASHES;
 
 static const char *notAllowedSubStrings[] = {".."};