diff --git a/libsrc/cbm610/kclose.s b/libsrc/cbm610/kclose.s
index 4ffde096d..a262313e9 100644
--- a/libsrc/cbm610/kclose.s
+++ b/libsrc/cbm610/kclose.s
@@ -5,7 +5,7 @@
 ;
 ; NOTE: The CLOSE system call in the CBM610 kernal will only remove the file
 ; entry and not close the file on IEC if the carry is clear on entry. To make
-; this somewhat compatible withthe C64, set the carry before jumping to the
+; this somewhat compatible with the C64, set the carry before jumping to the
 ; kernal.
 
         .export         CLOSE