diff --git a/src/libs/utils/outputformatter.cpp b/src/libs/utils/outputformatter.cpp
index 4efcae76468..cf6930cbe57 100644
--- a/src/libs/utils/outputformatter.cpp
+++ b/src/libs/utils/outputformatter.cpp
@@ -136,8 +136,10 @@ bool OutputLineParser::demoteErrorsToWarnings() const
 
 FilePath OutputLineParser::absoluteFilePath(const FilePath &filePath) const
 {
-    if (filePath.isEmpty() || filePath.toFileInfo().isAbsolute())
+    if (filePath.isEmpty())
         return filePath;
+    if (filePath.toFileInfo().isAbsolute())
+        return filePath.cleanPath();
     FilePaths candidates;
     for (const FilePath &dir : searchDirectories()) {
         FilePath candidate = dir.pathAppended(filePath.toString());
diff --git a/src/plugins/projectexplorer/gccparser.cpp b/src/plugins/projectexplorer/gccparser.cpp
index 6479240c2b0..30ebe45bf82 100644
--- a/src/plugins/projectexplorer/gccparser.cpp
+++ b/src/plugins/projectexplorer/gccparser.cpp
@@ -1367,6 +1367,14 @@ void ProjectExplorerPlugin::testGccOutputParsers_data()
                    CompileTask(Task::Error, ".pch/Qt6Core5Compat: No such file or directory", ".pch/Qt6Core5Compat"),
                    CompileTask(Task::Warning, "-Wformat-security ignored without -Wformat [-Wformat-security]")}
             << QString();
+
+    QTest::newRow("clean path")
+            << QString("/home/tim/path/to/sources/./and/more.h:15:22: error: blubb")
+            << OutputParserTester::STDERR
+            << QString() << QString()
+            << Tasks{CompileTask(Task::Error, "blubb", "/home/tim/path/to/sources/and/more.h",
+                                 15, 22)}
+            << QString();
 }
 
 void ProjectExplorerPlugin::testGccOutputParsers()