diff --git a/src/frontend/qt_sdl/ArchiveUtil.cpp b/src/frontend/qt_sdl/ArchiveUtil.cpp
index 91b993cd..6f4b1348 100644
--- a/src/frontend/qt_sdl/ArchiveUtil.cpp
+++ b/src/frontend/qt_sdl/ArchiveUtil.cpp
@@ -119,7 +119,7 @@ QVector<QString> ExtractFileFromArchive(QString path, QString wantedFile, QByteA
 
 }
 
-u32 ExtractFileFromArchive(QString path, QString wantedFile, u8** filedata, u32* filesize)
+s32 ExtractFileFromArchive(QString path, QString wantedFile, u8** filedata, u32* filesize)
 {
     struct archive *a = archive_read_new();
     struct archive_entry *entry;
diff --git a/src/frontend/qt_sdl/ArchiveUtil.h b/src/frontend/qt_sdl/ArchiveUtil.h
index d9327c80..14ff9968 100644
--- a/src/frontend/qt_sdl/ArchiveUtil.h
+++ b/src/frontend/qt_sdl/ArchiveUtil.h
@@ -36,7 +36,7 @@ namespace Archive
 {
 
 QVector<QString> ListArchive(QString path);
-u32 ExtractFileFromArchive(QString path, QString wantedFile, u8** filedata, u32* filesize);
+s32 ExtractFileFromArchive(QString path, QString wantedFile, u8** filedata, u32* filesize);
 //QVector<QString> ExtractFileFromArchive(QString path, QString wantedFile, QByteArray *romBuffer);
 //u32 ExtractFileFromArchive(const char* path, const char* wantedFile, u8 **romdata);
 
diff --git a/src/frontend/qt_sdl/ROMManager.cpp b/src/frontend/qt_sdl/ROMManager.cpp
index 6b2b0b06..0bb6b7fe 100644
--- a/src/frontend/qt_sdl/ROMManager.cpp
+++ b/src/frontend/qt_sdl/ROMManager.cpp
@@ -1362,7 +1362,7 @@ bool LoadGBAROM(QStringList filepath)
     {
         // file inside archive
 
-        u32 lenread = Archive::ExtractFileFromArchive(filepath.at(0), filepath.at(1), &filedata, &filelen);
+        s32 lenread = Archive::ExtractFileFromArchive(filepath.at(0), filepath.at(1), &filedata, &filelen);
         if (lenread < 0) return false;
         if (!filedata) return false;
         if (lenread != filelen)