diff --git a/dlls/vbscript/interp.c b/dlls/vbscript/interp.c
index 602a2599185..925da12e86f 100644
--- a/dlls/vbscript/interp.c
+++ b/dlls/vbscript/interp.c
@@ -668,8 +668,26 @@ static HRESULT interp_mod(exec_ctx_t *ctx)
 
 static HRESULT interp_idiv(exec_ctx_t *ctx)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    variant_val_t r, l;
+    VARIANT v;
+    HRESULT hres;
+
+    TRACE("\n");
+
+    hres = stack_pop_val(ctx, &r);
+    if(FAILED(hres))
+        return hres;
+
+    hres = stack_pop_val(ctx, &l);
+    if(SUCCEEDED(hres)) {
+        hres = VarIdiv(l.v, r.v, &v);
+        release_val(&l);
+    }
+    release_val(&r);
+    if(FAILED(hres))
+        return hres;
+
+    return stack_push(ctx, &v);
 }
 
 static HRESULT interp_neg(exec_ctx_t *ctx)
diff --git a/dlls/vbscript/tests/lang.vbs b/dlls/vbscript/tests/lang.vbs
index d5565bd3dfc..b6330b2c12b 100644
--- a/dlls/vbscript/tests/lang.vbs
+++ b/dlls/vbscript/tests/lang.vbs
@@ -106,6 +106,11 @@ Call ok(getVT(2 mod null) = "VT_NULL", "getVT(2 mod null) = " & getVT(2 mod null
 Call ok(getVT(null mod 2) = "VT_NULL", "getVT(null mod 2) = " & getVT(null mod 2))
 'FIXME: Call ok(empty mod 2 = 0, "empty mod 2 = " & (empty mod 2))
 
+Call ok(5 \ 2 = 2, "5 \ 2 = " & (5\2))
+Call ok(4.6 \ 1.5 = 2, "4.6 \ 1.5 = " & (4.6\1.5))
+Call ok(4.6 \ 1.49 = 5, "4.6 \ 1.49 = " & (4.6\1.49))
+Call ok(2+3\4 = 2, "2+3\4 = " & (2+3\4))
+
 if false then
     ok false, "if false called"
 end if