diff --git a/src/c2.c b/src/c2.c
index 2e8da444..0b8996ab 100644
--- a/src/c2.c
+++ b/src/c2.c
@@ -1875,6 +1875,21 @@ bool c2_match(struct c2_state *state, const struct managed_win *w,
 	return false;
 }
 
+/// Match a window against the first condition in a condition linked list.
+bool c2_match_one(struct c2_state *state, const struct managed_win *w,
+                  const c2_lptr_t *condlst, void **pdata) {
+	if (!condlst) {
+		return false;
+	}
+	if (c2_match_once(state, w, condlst->ptr)) {
+		if (pdata) {
+			*pdata = condlst->data;
+		}
+		return true;
+	}
+	return false;
+}
+
 /// Iterate over all conditions in a condition linked list. Call the callback for
 /// each of the conditions. If the callback returns true, the iteration stops
 /// early.
diff --git a/src/c2.h b/src/c2.h
index 8589ebee..681e54a5 100644
--- a/src/c2.h
+++ b/src/c2.h
@@ -59,6 +59,8 @@ void c2_window_state_update(struct c2_state *state, struct c2_window_state *wind
 
 bool c2_match(struct c2_state *state, const struct managed_win *w,
               const c2_lptr_t *condlst, void **pdata);
+bool c2_match_one(struct c2_state *state, const struct managed_win *w,
+                  const c2_lptr_t *condlst, void **pdata);
 
 bool c2_list_postprocess(struct c2_state *state, xcb_connection_t *c, c2_lptr_t *list);
 typedef bool (*c2_list_foreach_cb_t)(const c2_lptr_t *cond, void *data);
diff --git a/src/inspect.c b/src/inspect.c
index 94e9e707..4dc9b4da 100644
--- a/src/inspect.c
+++ b/src/inspect.c
@@ -148,7 +148,7 @@ bool c2_match_once_and_log(const c2_lptr_t *cond, void *data) {
 	struct c2_match_state *state = data;
 	void *rule_data = NULL;
 	printf("    %s ... ", c2_lptr_to_str(cond));
-	bool matched = c2_match(state->state, state->w, cond, &rule_data);
+	bool matched = c2_match_one(state->state, state->w, cond, rule_data);
 	printf("%s", matched ? "\033[1;32mmatched\033[0m" : "not matched");
 	if (state->print_value && matched) {
 		printf("/%lu", (unsigned long)(intptr_t)rule_data);