diff --git a/src/libs/utils/filenamevalidatinglineedit.cpp b/src/libs/utils/filenamevalidatinglineedit.cpp
index bc37cfa4b6e..8c3cdeaabff 100644
--- a/src/libs/utils/filenamevalidatinglineedit.cpp
+++ b/src/libs/utils/filenamevalidatinglineedit.cpp
@@ -90,8 +90,8 @@ void FileNameValidatingLineEdit::setAllowDirectories(bool v)
 #  define SLASHES "/"
 #endif
 
-static const char notAllowedCharsSubDir[]   = "~!?:&*\"|#%<>$\"'();`' ";
-static const char notAllowedCharsNoSubDir[] = "~!?:&*\"|#%<>$\"'();`' "SLASHES;
+static const char notAllowedCharsSubDir[]   = "={}[]~!?:&*\"|#%<>$\"'();`' ";
+static const char notAllowedCharsNoSubDir[] = "={}[]~!?:&*\"|#%<>$\"'();`' "SLASHES;
 
 static const char *notAllowedSubStrings[] = {".."};