diff --git a/include/rvl/GX/GXFrameBuf.h b/include/rvl/GX/GXFrameBuf.h
index 376007e5..f21de91f 100644
--- a/include/rvl/GX/GXFrameBuf.h
+++ b/include/rvl/GX/GXFrameBuf.h
@@ -24,6 +24,10 @@ typedef struct _GXRenderModeObj {
 void GXSetCopyFilter(u8, const u8[12][2], u8, const u8[7]);
 void GXSetCopyClear(GXColor, u32 zClear);
 void GXSetDispCopySrc(u16 left, u16 top, u16 width, u16 height);
+f32 GXGetYScaleFactor(u16 height, u16 width);
+u16 GXGetNumXfbLines(u16 height, f32 scale);
+void GXSetDispCopyDst(u16 width, u16 height);
+u32 GXSetDispCopyYScale(f32 scale);
 
 extern GXRenderModeObj GXNtsc480IntDf;
 extern GXRenderModeObj GXMpal480IntDf;
diff --git a/src/egg/core/eggVideo.cpp b/src/egg/core/eggVideo.cpp
index 9d0bd8cc..74b893d6 100644
--- a/src/egg/core/eggVideo.cpp
+++ b/src/egg/core/eggVideo.cpp
@@ -306,11 +306,6 @@ const EGG::Video::RenderModeObjSet renderModes = {{&renderMode0, &renderMode1, &
     configure(obj, set);
 }
 
-extern "C" f32 GXGetYScaleFactor(u16 height, u16 width);
-extern "C" u16 GXGetNumXfbLines(u16 height, f32 scale);
-extern "C" void GXSetDispCopyDst(u16 width, u16 height);
-extern "C" u32 GXSetDispCopyYScale(f32 scale);
-
 /* 804986f0 */ GXRenderModeObj *Video::configure(GXRenderModeObj *obj, const RenderModeObjSet *set) {
     GXRenderModeObj *oldMode = pRenderMode;
     if (set == nullptr) {