diff --git a/src/libs/utils/filenamevalidatinglineedit.cpp b/src/libs/utils/filenamevalidatinglineedit.cpp
index c95a43b1eaa..4fb5aa17e16 100644
--- a/src/libs/utils/filenamevalidatinglineedit.cpp
+++ b/src/libs/utils/filenamevalidatinglineedit.cpp
@@ -92,15 +92,20 @@ bool FileNameValidatingLineEdit::validateFileName(const QString &name,
 {
     if (name.isEmpty()) {
         if (errorMessage)
-            *errorMessage = tr("The name must not be empty");
+            *errorMessage = tr("Name is empty.");
         return false;
     }
     // Characters
     const char *notAllowedChars = allowDirectories ? notAllowedCharsSubDir : notAllowedCharsNoSubDir;
     for (const char *c = notAllowedChars; *c; c++)
         if (name.contains(QLatin1Char(*c))) {
-            if (errorMessage)
-                *errorMessage = tr("The name must not contain any of the characters '%1'.").arg(QLatin1String(notAllowedChars));
+            if (errorMessage) {
+                if (QChar(*c).isSpace()) {
+                    *errorMessage = tr("Name contains white space.");
+                } else {
+                    *errorMessage = tr("Invalid character '%1'.").arg(*c);
+                }
+            }
             return false;
         }
     // Substrings
@@ -109,7 +114,7 @@ bool FileNameValidatingLineEdit::validateFileName(const QString &name,
         const QLatin1String notAllowedSubString(notAllowedSubStrings[s]);
         if (name.contains(notAllowedSubString)) {
             if (errorMessage)
-                *errorMessage = tr("The name must not contain '%1'.").arg(QString(notAllowedSubString));
+                *errorMessage = tr("Invalid characters '%1'.").arg(QString(notAllowedSubString));
             return false;
         }
     }
@@ -119,7 +124,7 @@ bool FileNameValidatingLineEdit::validateFileName(const QString &name,
         matchesWinDevice = windowsDeviceSubDirPattern().exactMatch(name);
     if (matchesWinDevice) {
         if (errorMessage)
-            *errorMessage = tr("The name must not match that of a MS Windows device. (%1).").
+            *errorMessage = tr("Name matches MS Windows device. (%1).").
                             arg(windowsDeviceNoSubDirPattern().pattern().replace(QLatin1Char('|'), QLatin1Char(',')));
         return false;
     }
diff --git a/src/libs/utils/projectnamevalidatinglineedit.cpp b/src/libs/utils/projectnamevalidatinglineedit.cpp
index d06508493b4..880c88791ad 100644
--- a/src/libs/utils/projectnamevalidatinglineedit.cpp
+++ b/src/libs/utils/projectnamevalidatinglineedit.cpp
@@ -47,7 +47,7 @@ bool ProjectNameValidatingLineEdit::validateProjectName(const QString &name, QSt
     // reason. Since we are cross-platform, we generally disallow it.
     if (name.contains(QLatin1Char('.'))) {
         if (errorMessage)
-            *errorMessage = tr("The name must not contain the '.'-character.");
+            *errorMessage = tr("Invalid character '.'.");
           return false;
     }
     return true;