diff --git a/share/qtcreator/qml/qmlpuppet/container/sharedmemory_unix.cpp b/share/qtcreator/qml/qmlpuppet/container/sharedmemory_unix.cpp
index 53e7c7533ad..9cd0e2a9531 100644
--- a/share/qtcreator/qml/qmlpuppet/container/sharedmemory_unix.cpp
+++ b/share/qtcreator/qml/qmlpuppet/container/sharedmemory_unix.cpp
@@ -388,7 +388,8 @@ bool SharedMemory::createInternal(QSharedMemory::AccessMode mode, int size)
     }
 
     struct stat statBuffer;
-    fstat(m_fileHandle, &statBuffer);
+    if (fstat(m_fileHandle, &statBuffer) == -1)
+        return false;
     int fileSize = statBuffer.st_size;
 
     if (fileSize < size) {
@@ -457,7 +458,8 @@ bool SharedMemory::attachInternal(QSharedMemory::AccessMode mode)
     }
 
     struct stat statBuffer;
-    fstat(m_fileHandle, &statBuffer);
+    if (fstat(m_fileHandle, &statBuffer) == -1)
+        return false;
     int size = statBuffer.st_size;
 
     int protection = mode == QSharedMemory::ReadOnly ? PROT_READ : PROT_WRITE;