diff --git a/rpcs3/Emu/SysCalls/Modules/cellGcmSys.cpp b/rpcs3/Emu/SysCalls/Modules/cellGcmSys.cpp
index b357796b4c..8259bf5e30 100644
--- a/rpcs3/Emu/SysCalls/Modules/cellGcmSys.cpp
+++ b/rpcs3/Emu/SysCalls/Modules/cellGcmSys.cpp
@@ -21,6 +21,9 @@ enum
 	CELL_GCM_ERROR_ADDRESS_OVERWRAP		= 0x80210005
 };
 
+// Function declaration 
+int cellGcmSetPrepareFlip(mem_ptr_t<CellGcmContextData> ctxt, u32 id);
+
 /*------------------------------------------------------------
 				Memory Mapping
 ------------------------------------------------------------*/
@@ -724,9 +727,9 @@ int32_t cellGcmUnreserveIoMapSize(u32 size)
 	return CELL_OK;
 }
 
-//------------------------------------------------------------------------
+//----------------------------------------------------------------------------
 // Cursor
-//------------------------------------------------------------------------
+//----------------------------------------------------------------------------
 
 int cellGcmInitCursor()
 {