diff --git a/firmware/export/kernel.h b/firmware/export/kernel.h
index ab966da78f..5e43e2e9b5 100644
--- a/firmware/export/kernel.h
+++ b/firmware/export/kernel.h
@@ -68,7 +68,7 @@ struct mutex
 /* global tick variable */
 #if (CONFIG_CPU==PP5020)
 /* A temporary hack until timer interrupt is enabled - use the RTC */
-#define current_tick ((*((volatile unsigned long*)0x60005010))/10000)
+#define current_tick ((*((volatile long*)0x60005010))/10000)
 #else
 extern long current_tick;
 #endif