diff --git a/apps/recorder/resize.h b/apps/recorder/resize.h
index b37af43f2e..4e71fb8732 100644
--- a/apps/recorder/resize.h
+++ b/apps/recorder/resize.h
@@ -47,7 +47,7 @@
 #define SC_NUM 0x80000000U
 #define SC_MUL_INIT \
     unsigned long macsr_st = coldfire_get_macsr(); \
-    coldfire_set_macsr(0);
+    coldfire_set_macsr(EMAC_UNSIGNED);
 #define SC_MUL_END coldfire_set_macsr(macsr_st);
 #define SC_MUL(x, y) \
 ({ \
diff --git a/firmware/target/coldfire/system-target.h b/firmware/target/coldfire/system-target.h
index 84ec6ed4b0..9c349b1436 100644
--- a/firmware/target/coldfire/system-target.h
+++ b/firmware/target/coldfire/system-target.h
@@ -54,6 +54,7 @@
 
 #define EMAC_ROUND      0x10
 #define EMAC_FRACTIONAL 0x20
+#define EMAC_UNSIGNED   0x40
 #define EMAC_SATURATE   0x80
 
 static inline void coldfire_set_macsr(unsigned long flags)