diff --git a/src/display/lrmi.c b/src/display/lrmi.c
index 85c6fe6..5c74260 100644
--- a/src/display/lrmi.c
+++ b/src/display/lrmi.c
@@ -33,6 +33,13 @@ This software has NO WARRANTY.  Use it at your own risk.
 
 #include "lrmi.h"
 
+#if defined(__linux__) && !defined(TF_MASK)
+	#define TF_MASK X86_EFLAGS_TF
+	#define IF_MASK X86_EFLAGS_IF
+	#define VIF_MASK X86_EFLAGS_VIF
+	#define IOPL_MASK X86_EFLAGS_IOPL
+#endif
+
 #define REAL_MEM_BASE 	((void *)0x10000)
 #define REAL_MEM_SIZE 	0x10000
 #define REAL_MEM_BLOCKS 	0x100