diff --git a/src/nominatim.js b/src/nominatim.js
index 9d68865..ed36646 100644
--- a/src/nominatim.js
+++ b/src/nominatim.js
@@ -520,7 +520,7 @@
   ];
   Geocoder.Nominatim.html = [
     '<div class="ol-geocoder-search ol-control">',
-      '<button class="ol-geocoder-btn-search"></button>',
+      '<button type="button" class="ol-geocoder-btn-search"></button>',
       '<input type="text"',
         ' class="ol-geocoder-input-search"',
         ' placeholder="Search"',