diff --git a/dlls/jscript/array.c b/dlls/jscript/array.c
index 9b4314275d2..0af6df1c6dc 100644
--- a/dlls/jscript/array.c
+++ b/dlls/jscript/array.c
@@ -74,10 +74,8 @@ static HRESULT Array_length(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAM
         else
             len = floor(V_R8(&num));
 
-        if(len!=(DWORD)len) {
-            FIXME("Throw RangeError\n");
-            return E_FAIL;
-        }
+        if(len!=(DWORD)len)
+            return throw_range_error(dispex->ctx, ei, IDS_INVALID_LENGTH, NULL);
 
         for(i=len; i<This->length; i++) {
             hres = jsdisp_delete_idx(dispex, i);
@@ -850,10 +848,8 @@ static HRESULT ArrayConstr_value(DispatchEx *dispex, LCID lcid, WORD flags, DISP
     case DISPATCH_METHOD:
     case DISPATCH_CONSTRUCT: {
         if(arg_cnt(dp) == 1 && V_VT((arg_var = get_arg(dp, 0))) == VT_I4) {
-            if(V_I4(arg_var) < 0) {
-                FIXME("throw RangeError\n");
-                return E_FAIL;
-            }
+            if(V_I4(arg_var) < 0)
+                return throw_range_error(dispex->ctx, ei, IDS_INVALID_LENGTH, NULL);
 
             hres = create_array(dispex->ctx, V_I4(arg_var), &obj);
             if(FAILED(hres))
diff --git a/dlls/jscript/jscript_En.rc b/dlls/jscript/jscript_En.rc
index cee271889ec..161b761c419 100644
--- a/dlls/jscript/jscript_En.rc
+++ b/dlls/jscript/jscript_En.rc
@@ -23,4 +23,5 @@ LANGUAGE LANG_ENGLISH, SUBLANG_DEFAULT
 STRINGTABLE DISCARDABLE
 {
     IDS_NOT_DATE            "'[object]' is not a date object"
+    IDS_INVALID_LENGTH      "Array length must be a finite positive integer"
 }
diff --git a/dlls/jscript/resource.h b/dlls/jscript/resource.h
index e0f66613c66..5041e2792d4 100644
--- a/dlls/jscript/resource.h
+++ b/dlls/jscript/resource.h
@@ -19,3 +19,4 @@
 #include <windef.h>
 
 #define IDS_NOT_DATE                        0x138E
+#define IDS_INVALID_LENGTH                  0x13A5
diff --git a/dlls/jscript/tests/api.js b/dlls/jscript/tests/api.js
index 36fb191c1ec..f36ec80901e 100644
--- a/dlls/jscript/tests/api.js
+++ b/dlls/jscript/tests/api.js
@@ -1298,5 +1298,6 @@ function exception_test(func, type) {
     ok(ret === type, "Exception test, ret = " + ret + ", expected " + type +". Executed function: " + func.toString());
 }
 exception_test(function() {arr.toString = Date.prototype.toString; arr.toString();}, "TypeError");
+exception_test(function() {Array(-3);}, "RangeError");
 
 reportSuccess();