diff --git a/src/js/iframe.js b/src/js/iframe.js
index a339ca0..8568a25 100644
--- a/src/js/iframe.js
+++ b/src/js/iframe.js
@@ -82,7 +82,7 @@ $.magnificPopup.registerModule(IFRAME_NS, {
 							embedSrc = this.id.call( this, embedSrc );
 						}
 					}
-					embedSrc = this.src.replace('%id%', embedSrc );
+					embedSrc = this.src.replace(/%id%/g, embedSrc );
 					return false; // break;
 				}
 			});