diff --git a/lib/compiler.js b/lib/compiler.js
index 93f3dbc..58f91e1 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -171,11 +171,11 @@ function compile(nodes) {
       var node = array[i];
       if (firstType === null) {
         firstType = node.type;
-      } else {
-        if (node.type !== firstType) {
-          genError("Cannot add value of type " + node.type + " to array of type " +
-            firstType + ".", node.line, node.column);
-        }
+      } else if ((node.type === "Integer" || node.type === "Float") && (firstType === "Integer" || firstType === "Float")) {
+        // OK.
+      } else if (node.type !== firstType) {
+        genError("Cannot add value of type " + node.type + " to array of type " +
+          firstType + ".", node.line, node.column);
       }
     }