diff --git a/src/common/filesystem/include/fs_files.h b/src/common/filesystem/include/fs_files.h
index 7f9eff9e9..8ae78b2b3 100644
--- a/src/common/filesystem/include/fs_files.h
+++ b/src/common/filesystem/include/fs_files.h
@@ -265,36 +265,14 @@ public:
 		return mReader->Read(buffer, len);
 	}
 
-	FileData Read(size_t len)
-	{
-		FileData buffer;
-		if (len > 0)
-		{
-			Size length = mReader->Read(buffer.allocate(len), len);
-			if ((size_t)length < len) buffer.allocate(length);
-		}
-		return buffer;
-	}
+	FileData Read(size_t len);
+	FileData ReadPadded(size_t padding);
 
 	FileData Read()
 	{
 		return Read(GetLength());
 	}
 
-	FileData ReadPadded(size_t padding)
-	{
-		auto len = GetLength();
-		FileData buffer;
-
-		if (len > 0)
-		{
-			auto p = (char*)buffer.allocate(len + padding);
-			Size length = mReader->Read(p, len);
-			if (length < len) buffer.clear();
-			else memset(p + len, 0, padding);
-		}
-		return buffer;
-	}
 
 	char *Gets(char *strbuf, Size len)
 	{
diff --git a/src/common/filesystem/source/files.cpp b/src/common/filesystem/source/files.cpp
index 819550310..ac0581119 100644
--- a/src/common/filesystem/source/files.cpp
+++ b/src/common/filesystem/source/files.cpp
@@ -402,6 +402,32 @@ bool FileReader::OpenMemoryArray(FileData& data)
 	return true;
 }
 
+FileData FileReader::Read(size_t len)
+{
+	FileData buffer;
+	if (len > 0)
+	{
+		Size length = mReader->Read(buffer.allocate(len), len);
+		if ((size_t)length < len) buffer.allocate(length);
+	}
+	return buffer;
+}
+
+FileData FileReader::ReadPadded(size_t padding)
+{
+	auto len = GetLength();
+	FileData buffer;
+
+	if (len > 0)
+	{
+		auto p = (char*)buffer.allocate(len + padding);
+		Size length = mReader->Read(p, len);
+		if (length < len) buffer.clear();
+		else memset(p + len, 0, padding);
+	}
+	return buffer;
+}
+
 
 
 //==========================================================================