1 files changed, 5 insertions, 0 deletions

diff --git a/src/common.h b/src/common.h
index f64e114..27082b7 100644
--- a/src/common.h
+++ b/src/common.h
@@ -48,6 +48,11 @@
 #define MT_TOOL_PEN             1
 #endif
 
+/* includes available in 2.6.33 */
+#ifndef ABS_MT_PRESSURE
+#define ABS_MT_PRESSURE         0x3a    /* Pressure on contact area */
+#endif
+
 #define SYSCALL(call) while (((call) == -1) && (errno == EINTR))
 
 #define BITMASK(x) (1U << (x))