diff --git a/shared/shared.cpp b/shared/shared.cpp
index 2f9d8cb..26c4d07 100644
--- a/shared/shared.cpp
+++ b/shared/shared.cpp
@@ -534,12 +534,9 @@ void recursiveCopyAndDeploy(const QString &appDirPath, const QSet<QString> &rpat
     foreach (QString file, files) {
         const QString fileSourcePath = sourcePath + QLatin1Char('/') + file;
 
-        if (file.endsWith("_debug.dylib")) {
-            continue; // Skip debug versions
-        } else {
-            QString fileDestinationPath = destinationPath + QLatin1Char('/') + file;
-            copyFilePrintStatus(fileSourcePath, fileDestinationPath);
-        }
+        QString fileDestinationPath = destinationPath + QLatin1Char('/') + file;
+        copyFilePrintStatus(fileSourcePath, fileDestinationPath);
+
     }
 
     QStringList subdirs = QDir(sourcePath).entryList(QStringList() << QStringLiteral("*"), QDir::Dirs | QDir::NoDotAndDotDot);
@@ -603,6 +600,16 @@ void changeIdentification(const QString &id, const QString &binaryPath)
     LogDebug() << " change rpath in" << binaryPath;
     LogDebug() << " to" << id;
     runPatchelf(QStringList() << "--set-rpath" << id << binaryPath);
+
+    // qt_prfxpath:
+    if (binaryPath.contains("libQt5Core")) {
+        LogDebug() << "libQt5Core detected, patching its qt_prfxpath";
+        QString* errorMessage;
+        if (!patchQtCore(binaryPath, errorMessage))
+            LogError() << errorMessage;
+            return;
+    }
+
 }
 
 void runStrip(const QString &binaryPath)
@@ -1231,6 +1238,64 @@ void changeQtLibraries(const QString appPath, const QString &qtPath)
     }
 }
 
+/* https://codereview.qt-project.org/gitweb?p=qt/qttools.git;a=blob_plain;f=src/windeployqt/utils.cpp;h=e89496ea1f371ed86f6937284c1c801daf576572;hb=7be81b804da102b374c2089aac38353a0383c254
+ * Search for "qt_prfxpath=<xxx>" in a path, and replace it with "qt_prfxpath=." or "qt_prfxpath=../../" */
+bool patchQtCore(const QString &path, QString *errorMessage)
+{
+    LogNormal() << "Patching " << QFileInfo(path).fileName() << "...\n";
+
+    QFile file(path);
+    if (!file.open(QIODevice::ReadWrite)) {
+        *errorMessage = QString::fromLatin1("Unable to patch %1: %2").arg(
+                    QDir::toNativeSeparators(path), file.errorString());
+        return false;
+    }
+    QByteArray content = file.readAll();
+
+    if (content.isEmpty()) {
+        *errorMessage = QString::fromLatin1("Unable to patch %1: Could not read file content").arg(
+                    QDir::toNativeSeparators(path));
+        return false;
+    }
+
+    QByteArray prfxpath("qt_prfxpath=");
+    int startPos = content.indexOf(prfxpath);
+    if (startPos == -1) {
+        *errorMessage = QString::fromLatin1(
+                    "Unable to patch %1: Could not locate pattern \"qt_prfxpath=\"").arg(
+                    QDir::toNativeSeparators(path));
+        return false;
+    }
+    startPos += prfxpath.length();
+    int endPos = content.indexOf(char(0), startPos);
+    if (endPos == -1) {
+        *errorMessage = QString::fromLatin1("Unable to patch %1: Internal error").arg(
+                    QDir::toNativeSeparators(path));
+        return false;
+    }
+
+    QByteArray replacement = QByteArray(endPos - startPos, char(0));
+    if(fhsLikeMode == true){
+        replacement[0] = '.';
+        replacement[1] = '.';
+        replacement[2] = '/';
+        replacement[3] = '.';
+        replacement[4] = '.';
+        replacement[5] = '/';
+    } else {
+        replacement[0] = '.';
+    }
+    content.replace(startPos, endPos - startPos, replacement);
+
+    if (!file.seek(0)
+            || (file.write(content) != content.size())) {
+        *errorMessage = QString::fromLatin1("Unable to patch %1: Could not write to file").arg(
+                    QDir::toNativeSeparators(path));
+        return false;
+    }
+    return true;
+}
+
 bool checkAppImagePrerequisites(const QString &appDirPath)
 {
     if(fhsLikeMode == true){
diff --git a/shared/shared.h b/shared/shared.h
index 31cc688..87338ba 100644
--- a/shared/shared.h
+++ b/shared/shared.h
@@ -124,6 +124,7 @@ void runStrip(const QString &binaryPath);
 void stripAppBinary(const QString &bundlePath);
 QString findAppBinary(const QString &appDirPath);
 QStringList findAppLibraries(const QString &appDirPath);
+bool patchQtCore(const QString &path, QString *errorMessage);
 int createAppImage(const QString &appBundlePath);
 bool checkAppImagePrerequisites(const QString &appBundlePath);