diff --git a/libsrc/runtime/Makefile b/libsrc/runtime/Makefile
index a7c959700..7ab599219 100644
--- a/libsrc/runtime/Makefile
+++ b/libsrc/runtime/Makefile
@@ -155,7 +155,6 @@ OBJS = 	add.o		\
        	mod.o  		\
        	mul.o  		\
         mul8.o          \
-        mul8x8r16.o     \
 	mulax3.o	\
 	mulax5.o	\
 	mulax6.o	\
@@ -222,6 +221,7 @@ OBJS = 	add.o		\
         udiv32by16r16.o \
        	umod.o		\
         umul16x16r32.o  \
+        umul8x8r16.o    \
        	xor.o           \
         zeropage.o
 
diff --git a/libsrc/runtime/mul8x8r16.s b/libsrc/runtime/umul8x8r16.s
similarity index 89%
rename from libsrc/runtime/mul8x8r16.s
rename to libsrc/runtime/umul8x8r16.s
index a09618124..543110f1b 100644
--- a/libsrc/runtime/mul8x8r16.s
+++ b/libsrc/runtime/umul8x8r16.s
@@ -4,8 +4,7 @@
 ; CC65 runtime: 8x8 => 16 multiplication
 ;
 
-       	.export		umul8x8r16
-        .export         mul8x8r16 := umul8x8r16
+       	.export		umul8x8r16, umul8x8r16m
     	.importzp	ptr1, ptr3
 
 
@@ -18,6 +17,8 @@
 ;
 
 umul8x8r16:
+        sta     ptr3
+umul8x8r16m:
     	lda   	#0              ; Clear byte 1
        	ldy    	#8    	       	; Number of bits
         lsr     ptr1            ; Get first bit of lhs into carry
@@ -31,5 +32,6 @@ umul8x8r16:
         tax
         stx     ptr1+1          ; Result in a/x and ptr1
     	lda	ptr1  	       	; Load the result
-    	rts	   		; Done
+    	rts	    		; Done
+