diff --git a/kex.c b/kex.c
index d2b0f7712a0..79b392f36c4 100644
--- a/kex.c
+++ b/kex.c
@@ -809,7 +809,7 @@ patch_list(char * orig)
 			adj = xreallocarray(adj,
 			    strlen(adj) /* original string length */
 			    + 1 /* for the original null-terminator */
-			    + strlen(cppstr) /* make room for ccpstr */
+			    + strlen(ccpstr) /* make room for ccpstr */
 			    + 1 /* make room for the comma delimiter */
 			    , sizeof(char));
 			/*