diff --git a/package-lock.json b/package-lock.json
index be32f12..4192512 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -576,9 +576,9 @@
       "dev": true
     },
     "fastfile": {
-      "version": "0.0.9",
-      "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.9.tgz",
-      "integrity": "sha512-njh6lH2SJiS0u0JofJQf2YfEOSgGfbYPtmFnpEXXy6OilWoX1wGw3klaSKIwhq8+E5MqYpqJXMiaqmptaU2wig=="
+      "version": "0.0.12",
+      "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.12.tgz",
+      "integrity": "sha512-0EZo2y5eW8X0oiDDRvcnufjVxlM96CQL5hvmRQtbRABWlCkH73IHwkzl0qOSdxtchaMr+0TSB7GVqaVEixRr1Q=="
     },
     "ffiasm": {
       "version": "0.0.2",
diff --git a/ports/c/builder.js b/ports/c/builder.js
index 46fe097..58b10b0 100644
--- a/ports/c/builder.js
+++ b/ports/c/builder.js
@@ -1,4 +1,3 @@
-const streamFromMultiArray = require("../../src/streamfromarray_txt.js");
 const utils = require("../../src/utils");
 const assert = require("assert");
 const Scalar = require("ffjavascript").Scalar;
diff --git a/ports/wasm/builder.js b/ports/wasm/builder.js
index 5093030..f291b70 100644
--- a/ports/wasm/builder.js
+++ b/ports/wasm/builder.js
@@ -1,5 +1,3 @@
-const streamFromArrayTxt = require("../../src/streamfromarray_txt");
-const streamFromArrayBin = require("../../src/streamfromarray_bin");
 const assert = require("assert");
 const ModuleBuilder = require("wasmbuilder").ModuleBuilder;
 const ModuleBuilderWat = require("wasmbuilder").ModuleBuilderWat;
diff --git a/src/construction_phase.js b/src/construction_phase.js
index 20f5778..743b741 100644
--- a/src/construction_phase.js
+++ b/src/construction_phase.js
@@ -574,7 +574,7 @@ function execFunctionCall(ctx, ast) {
 
     const fnc = ctx.functions[ast.name];
 
-    if (!fnc) return ctx.throwError("Function not defined");
+    if (!fnc) return ctx.throwError(ast, "Function not defined");
 
     const paramValues = [];
     for (let i=0; i< ast.params.length; i++) {