diff --git a/engines/sci/detection.cpp b/engines/sci/detection.cpp
index 80da7b13756..e26e514b02e 100644
--- a/engines/sci/detection.cpp
+++ b/engines/sci/detection.cpp
@@ -513,7 +513,7 @@ const ADGameDescription *SciMetaEngine::fallbackDetect(const Common::FSList &fsl
 	ResourceManager *resMan = new ResourceManager();
 	assert(resMan);
 	resMan->addAppropriateSources(fslist);
-	resMan->init();
+	resMan->init(true);
 	// TODO: Add error handling.
 
 #ifndef ENABLE_SCI32
diff --git a/engines/sci/resource.cpp b/engines/sci/resource.cpp
index 703dc477602..f08c72a8330 100644
--- a/engines/sci/resource.cpp
+++ b/engines/sci/resource.cpp
@@ -813,7 +813,7 @@ void ResourceManager::freeResourceSources() {
 ResourceManager::ResourceManager() {
 }
 
-void ResourceManager::init() {
+void ResourceManager::init(bool initFromFallbackDetector) {
 	_memoryLocked = 0;
 	_memoryLRU = 0;
 	_LRU.clear();
@@ -845,12 +845,12 @@ void ResourceManager::init() {
 
 	scanNewSources();
 
-	if (!addInternalSources()) {
-		error("Somehow I can't seem to find the sound files I need (RESOURCE.AUD/RESOURCE.SFX), aborting");
-		return;
-	}
+	if (!initFromFallbackDetector) {
+		if (!addInternalSources())
+			error("Somehow I can't seem to find the sound files I need (RESOURCE.AUD/RESOURCE.SFX), aborting");
 
-	scanNewSources();
+		scanNewSources();
+	}
 
 	detectSciVersion();
 
diff --git a/engines/sci/resource.h b/engines/sci/resource.h
index f46f26620dc..d9b162df313 100644
--- a/engines/sci/resource.h
+++ b/engines/sci/resource.h
@@ -273,7 +273,7 @@ public:
 	/**
 	 * Initializes the resource manager.
 	 */
-	void init();
+	void init(bool initFromFallbackDetector = false);
 
 	int addAppropriateSources();
 	int addAppropriateSources(const Common::FSList &fslist);	// TODO: Switch from FSList to Common::Archive?