diff --git a/package/exim/exim.mk b/package/exim/exim.mk
index e0fcd83fb0..9c54eeec44 100644
--- a/package/exim/exim.mk
+++ b/package/exim/exim.mk
@@ -20,7 +20,7 @@ define exim-config-change # variable-name, variable-value
 		$(@D)/Local/Makefile
 endef
 
-# Comment-out a variable. Has no effect if it does not exits.
+# Comment-out a variable. Has no effect if it does not exist.
 define exim-config-unset # variable-name
 	$(SED) 's,^\([[:space:]]*$1[[:space:]]*=.*$$\),# \1,' \
 		$(@D)/Local/Makefile