diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f7f68ba250..ad30e94ed1 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -17277,9 +17277,8 @@ virDomainDefAddImplicitControllers(virDomainDefPtr def)
     return 0;
 }
 
-/* Check if vcpupin with same id already exists.
- * Return 1 if exists, 0 if not. */
-int
+/* Check if vcpupin with same id already exists. */
+bool
 virDomainPinIsDuplicate(virDomainPinDefPtr *def,
                         int npin,
                         int id)
@@ -17287,14 +17286,14 @@ virDomainPinIsDuplicate(virDomainPinDefPtr *def,
     size_t i;
 
     if (!def || !npin)
-        return 0;
+        return false;
 
     for (i = 0; i < npin; i++) {
         if (def[i]->id == id)
-            return 1;
+            return true;
     }
 
-    return 0;
+    return false;
 }
 
 virDomainPinDefPtr
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 61082c839d..95cbb9cbce 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1934,9 +1934,9 @@ void virDomainPinDefArrayFree(virDomainPinDefPtr *def, int npin);
 virDomainPinDefPtr *virDomainPinDefCopy(virDomainPinDefPtr *src,
                                         int npin);
 
-int virDomainPinIsDuplicate(virDomainPinDefPtr *def,
-                            int npin,
-                            int id);
+bool virDomainPinIsDuplicate(virDomainPinDefPtr *def,
+                             int npin,
+                             int id);
 
 virDomainPinDefPtr virDomainPinFind(virDomainPinDefPtr *def,
                                     int npin,