diff --git a/js/src/builtin/TestingFunctions.cpp b/js/src/builtin/TestingFunctions.cpp
index 611e4f86986..dc1a19533fc 100644
--- a/js/src/builtin/TestingFunctions.cpp
+++ b/js/src/builtin/TestingFunctions.cpp
@@ -827,52 +827,32 @@ FinalizeCount(JSContext *cx, unsigned argc, jsval *vp)
 static bool
 DumpHeapComplete(JSContext *cx, unsigned argc, jsval *vp)
 {
-    CallArgs args = CallArgsFromVp(argc, vp);
-
-    DumpHeapNurseryBehaviour nurseryBehaviour = js::IgnoreNurseryObjects;
-    FILE *dumpFile = NULL;
-
-    unsigned i = 0;
-    if (argc > i) {
-        Value v = args[i];
+    const char *fileName = nullptr;
+    JSAutoByteString fileNameBytes;
+    if (argc > 0) {
+        Value v = JS_ARGV(cx, vp)[0];
         if (v.isString()) {
             JSString *str = v.toString();
-            bool same = false;
-            if (!JS_StringEqualsAscii(cx, str, "collectNurseryBeforeDump", &same))
-                return false;
-            if (same) {
-                nurseryBehaviour = js::CollectNurseryBeforeDump;
-                ++i;
-            }
-        }
-    }
-
-    if (argc > i) {
-        Value v = args[i];
-        if (v.isString()) {
-            JSString *str = v.toString();
-            JSAutoByteString fileNameBytes;
             if (!fileNameBytes.encodeLatin1(cx, str))
                 return false;
-            const char *fileName = fileNameBytes.ptr();
-            dumpFile = fopen(fileName, "w");
-            if (!dumpFile) {
-                JS_ReportError(cx, "can't open %s", fileName);
-                return false;
-            }
-            ++i;
+            fileName = fileNameBytes.ptr();
         }
     }
 
-    if (i != argc) {
-        JS_ReportError(cx, "bad arguments passed to dumpHeapComplete");
-        return false;
+    FILE *dumpFile;
+    if (!fileName) {
+        dumpFile = stdout;
+    } else {
+        dumpFile = fopen(fileName, "w");
+        if (!dumpFile) {
+            JS_ReportError(cx, "can't open %s", fileName);
+            return false;
+        }
     }
 
-    js::DumpHeapComplete(JS_GetRuntime(cx), dumpFile ? dumpFile : stdout, nurseryBehaviour);
+    js::DumpHeapComplete(JS_GetRuntime(cx), dumpFile);
 
-    if (dumpFile)
-        fclose(dumpFile);
+    fclose(dumpFile);
 
     JS_SET_RVAL(cx, vp, JSVAL_VOID);
     return true;
@@ -1204,10 +1184,8 @@ static const JSFunctionSpecWithHelp TestingFunctions[] = {
 "  If true, obj is a proxy of some sort"),
 
     JS_FN_HELP("dumpHeapComplete", DumpHeapComplete, 1, 0,
-"dumpHeapComplete(['collectNurseryBeforeDump'], [filename])",
-"  Dump reachable and unreachable objects to the named file, or to stdout.  If\n"
-"  'collectNurseryBeforeDump' is specified, a minor GC is performed first,\n"
-"  otherwise objects in the nursery are ignored."),
+"dumpHeapComplete([filename])",
+"  Dump reachable and unreachable objects to a file."),
 
     JS_FN_HELP("terminate", Terminate, 0, 0,
 "terminate()",
diff --git a/js/src/jit-test/tests/gc/bug-913224.js b/js/src/jit-test/tests/gc/bug-913224.js
deleted file mode 100644
index d410e1b9c35..00000000000
--- a/js/src/jit-test/tests/gc/bug-913224.js
+++ /dev/null
@@ -1 +0,0 @@
-dumpHeapComplete();
diff --git a/js/src/jsfriendapi.cpp b/js/src/jsfriendapi.cpp
index 9a4cd432abf..a986da04abf 100644
--- a/js/src/jsfriendapi.cpp
+++ b/js/src/jsfriendapi.cpp
@@ -753,9 +753,6 @@ DumpHeapVisitCell(JSRuntime *rt, void *data, void *thing,
 static void
 DumpHeapVisitChild(JSTracer *trc, void **thingp, JSGCTraceKind kind)
 {
-    if (gc::IsInsideNursery(trc->runtime, *thingp))
-        return;
-
     JSDumpHeapTracer *dtrc = static_cast<JSDumpHeapTracer *>(trc);
     char buffer[1024];
     fprintf(dtrc->output, "> %p %c %s\n", *thingp, MarkDescriptor(*thingp),
@@ -765,9 +762,6 @@ DumpHeapVisitChild(JSTracer *trc, void **thingp, JSGCTraceKind kind)
 static void
 DumpHeapVisitRoot(JSTracer *trc, void **thingp, JSGCTraceKind kind)
 {
-    if (gc::IsInsideNursery(trc->runtime, *thingp))
-        return;
-
     JSDumpHeapTracer *dtrc = static_cast<JSDumpHeapTracer *>(trc);
     char buffer[1024];
     fprintf(dtrc->output, "%p %c %s\n", *thingp, MarkDescriptor(*thingp),
@@ -775,15 +769,10 @@ DumpHeapVisitRoot(JSTracer *trc, void **thingp, JSGCTraceKind kind)
 }
 
 void
-js::DumpHeapComplete(JSRuntime *rt, FILE *fp, js::DumpHeapNurseryBehaviour nurseryBehaviour)
+js::DumpHeapComplete(JSRuntime *rt, FILE *fp)
 {
     JSDumpHeapTracer dtrc(fp);
 
-#ifdef JSGC_GENERATIONAL
-    if (nurseryBehaviour == js::CollectNurseryBeforeDump)
-        MinorGC(rt, JS::gcreason::API);
-#endif
-
     JS_TracerInit(&dtrc, rt, DumpHeapVisitRoot);
     dtrc.eagerlyTraceWeakMaps = TraceWeakMapKeysValues;
     TraceRuntime(&dtrc);
diff --git a/js/src/jsfriendapi.h b/js/src/jsfriendapi.h
index bdee8216caa..9565a752e83 100644
--- a/js/src/jsfriendapi.h
+++ b/js/src/jsfriendapi.h
@@ -255,17 +255,12 @@ GetCompartmentZone(JSCompartment *comp);
 typedef bool
 (* PreserveWrapperCallback)(JSContext *cx, JSObject *obj);
 
-typedef enum  {
-    CollectNurseryBeforeDump,
-    IgnoreNurseryObjects
-} DumpHeapNurseryBehaviour;
-
  /*
   * Dump the complete object graph of heap-allocated things.
   * fp is the file for the dump output.
   */
 extern JS_FRIEND_API(void)
-DumpHeapComplete(JSRuntime *rt, FILE *fp, DumpHeapNurseryBehaviour nurseryBehaviour);
+DumpHeapComplete(JSRuntime *rt, FILE *fp);
 
 #ifdef JS_OLD_GETTER_SETTER_METHODS
 JS_FRIEND_API(bool) obj_defineGetter(JSContext *cx, unsigned argc, JS::Value *vp);
diff --git a/xpcom/base/CycleCollectedJSRuntime.cpp b/xpcom/base/CycleCollectedJSRuntime.cpp
index af2f4dc7c7c..1db9dea1325 100644
--- a/xpcom/base/CycleCollectedJSRuntime.cpp
+++ b/xpcom/base/CycleCollectedJSRuntime.cpp
@@ -968,7 +968,7 @@ CycleCollectedJSRuntime::DeferredFinalize(nsISupports* aSupports)
 void
 CycleCollectedJSRuntime::DumpJSHeap(FILE* file)
 {
-  js::DumpHeapComplete(Runtime(), file, js::CollectNurseryBeforeDump);
+  js::DumpHeapComplete(Runtime(), file);
 }