diff --git a/src/protocols/rdp/client.c b/src/protocols/rdp/client.c
index 29773fc5..93bc6e21 100644
--- a/src/protocols/rdp/client.c
+++ b/src/protocols/rdp/client.c
@@ -500,8 +500,8 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
                 argv[IDX_WIDTH], settings->width);
     }
 
-    /* Round width up to nearest multiple of 4 */
-    settings->width = (settings->width + 3) & ~0x3;
+    /* Round width down to nearest multiple of 4 */
+    settings->width = settings->width & ~0x3;
 
     /* Use optimal height unless overridden */
     settings->height = client->info.optimal_height;