diff --git a/src/target/target.c b/src/target/target.c
index a9bb8e850..820e7471a 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -1213,7 +1213,7 @@ int target_alloc_working_area_try(struct target *target, uint32_t size, struct w
 	}
 
 	/* mark as used, and return the new (reused) area */
-	new_wa->free = 0;
+	new_wa->free = false;
 	*area = new_wa;
 
 	/* user pointer */
@@ -1247,7 +1247,7 @@ static int target_free_working_area_restore(struct target *target, struct workin
 			return retval;
 	}
 
-	area->free = 1;
+	area->free = true;
 
 	/* mark user pointer invalid */
 	*area->user = NULL;
diff --git a/src/target/target.h b/src/target/target.h
index ef05e7513..4d03018e7 100644
--- a/src/target/target.h
+++ b/src/target/target.h
@@ -94,7 +94,7 @@ struct working_area
 {
 	uint32_t address;
 	uint32_t size;
-	int free;
+	bool free;
 	uint8_t *backup;
 	struct working_area **user;
 	struct working_area *next;