diff --git a/include/dosexe.h b/include/dosexe.h
index 530cdd77e3b..bbed1f85759 100644
--- a/include/dosexe.h
+++ b/include/dosexe.h
@@ -44,7 +44,9 @@ extern LPDOSTASK MZ_AllocDPMITask( HMODULE16 hModule );
 #define V86_FLAG 0x00020000
 
 extern void (*ctx_debug_call)( int, CONTEXT* );
+#ifdef __i386__
 extern BOOL32 (*instr_emu_call)( SIGCONTEXT* );
+#endif
 
 extern void MZ_Tick( WORD handle );