diff --git a/randr/rrproperty.c b/randr/rrproperty.c
index 25469f57b..c4fef8a1f 100644
--- a/randr/rrproperty.c
+++ b/randr/rrproperty.c
@@ -530,7 +530,7 @@ ProcRRChangeOutputProperty(ClientPtr client)
     char format, mode;
     unsigned long len;
     int sizeInBytes;
-    int totalSize;
+    uint64_t totalSize;
     int err;
 
     REQUEST_AT_LEAST_SIZE(xRRChangeOutputPropertyReq);
diff --git a/randr/rrproviderproperty.c b/randr/rrproviderproperty.c
index b79c17f9b..90c5a9a93 100644
--- a/randr/rrproviderproperty.c
+++ b/randr/rrproviderproperty.c
@@ -498,7 +498,7 @@ ProcRRChangeProviderProperty(ClientPtr client)
     char format, mode;
     unsigned long len;
     int sizeInBytes;
-    int totalSize;
+    uint64_t totalSize;
     int err;
 
     REQUEST_AT_LEAST_SIZE(xRRChangeProviderPropertyReq);