diff --git a/src/default_lowlevel.h b/src/default_lowlevel.h
index 803f94a17..891ddee57 100644
--- a/src/default_lowlevel.h
+++ b/src/default_lowlevel.h
@@ -38,7 +38,8 @@
 
 #include "crm.h"
 
-#define trim_xtal() pack_XTAL_CNTL(CTUNE_4PF, CTUNE, FTUNE, IBIAS);
+#define trim_xtal() pack_XTAL_CNTL(CTUNE_4PF, CTUNE, FTUNE, IBIAS)
+
 void default_vreg_init(void);
 void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp);