diff --git a/sysdeps/alpha/divrem.m4 b/sysdeps/alpha/divrem.m4
index ab86128a16..5942cf447f 100644
--- a/sysdeps/alpha/divrem.m4
+++ b/sysdeps/alpha/divrem.m4
@@ -12,31 +12,31 @@
 /* We do not handle div by zero yet.  */
 #include <machine/pal.h>
 #endif
-#include <regdef.h>
+#include <sysdep.h>
 
 define(path, `SYSDEP_DIR/macros.m4')dnl
 include(path)
 
 FUNC__(OP)
-	! First set up the dividend.
+	/* First set up the dividend.  */
 	EXTEND(t10)
 	stq t10,0(sp)
 	ldt $f10,0(sp)
 	cvtqt $f10,$f10
 	ADJQU($f10)
 
-	! Then set up the divisor.
+	/* Then set up the divisor.  */
 	EXTEND(t11)
 	stq t11,0(sp)
 	ldt $f1,0(sp)
 	cvtqt $f1,$f1
 	ADJQU($f1)
 
-	! Do the division.
+	/* Do the division.  */
 	divt $f10,$f1,$f10
 	cvttqc $f10,$f10
 
-	! Put the result in t12.
+	/* Put the result in t12.  */
 	stt $f10,0(sp)
 	ldq t12,0(sp)
 	FULLEXTEND(t12)