diff --git a/dll/win32/msi/install.c b/dll/win32/msi/install.c
index b9290b4a8d0..63aed1eeebe 100644
--- a/dll/win32/msi/install.c
+++ b/dll/win32/msi/install.c
@@ -1061,6 +1061,9 @@ UINT WINAPI MsiGetFeatureCostW(MSIHANDLE hInstall, LPCWSTR szFeature,
     TRACE("(%d %s %i %i %p)\n", hInstall, debugstr_w(szFeature),
           iCostTree, iState, piCost);
 
+    if (!szFeature)
+        return ERROR_INVALID_PARAMETER;
+
     package = msihandle2msiinfo(hInstall, MSIHANDLETYPE_PACKAGE);
     if (!package)
     {
@@ -1090,6 +1093,12 @@ UINT WINAPI MsiGetFeatureCostW(MSIHANDLE hInstall, LPCWSTR szFeature,
         return ERROR_SUCCESS;
     }
 
+    if (!piCost)
+    {
+        msiobj_release( &package->hdr );
+        return ERROR_INVALID_PARAMETER;
+    }
+
     feature = msi_get_loaded_feature(package, szFeature);
 
     if (feature)
diff --git a/modules/rostests/winetests/msi/package.c b/modules/rostests/winetests/msi/package.c
index c2e2106c38b..d26e2fdb56f 100644
--- a/modules/rostests/winetests/msi/package.c
+++ b/modules/rostests/winetests/msi/package.c
@@ -8479,7 +8479,7 @@ static void test_MsiApplyPatch(void)
     ok(r == ERROR_INVALID_PARAMETER, "Expected ERROR_INVALID_PARAMETER, got %u\n", r);
 }
 
-static void test_MsiEnumComponentCosts(void)
+static void test_costs(void)
 {
     MSIHANDLE hdb, hpkg;
     char package[12], drive[3];
@@ -8662,6 +8662,20 @@ static void test_MsiEnumComponentCosts(void)
     r = MsiEnumComponentCostsA( hpkg, "", 1, INSTALLSTATE_UNKNOWN, drive, &len, &cost, &temp );
     ok( r == ERROR_NO_MORE_ITEMS, "Expected ERROR_NO_MORE_ITEMS, got %u\n", r );
 
+    /* test MsiGetFeatureCost */
+    cost = 0xdead;
+    r = MsiGetFeatureCostA( hpkg, NULL, MSICOSTTREE_SELFONLY, INSTALLSTATE_LOCAL, &cost );
+    ok( r == ERROR_INVALID_PARAMETER, "got %u\n", r);
+    ok( cost == 0xdead, "got %d\n", cost );
+
+    r = MsiGetFeatureCostA( hpkg, "one", MSICOSTTREE_SELFONLY, INSTALLSTATE_LOCAL, NULL );
+    ok( r == ERROR_INVALID_PARAMETER, "got %u\n", r);
+
+    cost = 0xdead;
+    r = MsiGetFeatureCostA( hpkg, "one", MSICOSTTREE_SELFONLY, INSTALLSTATE_LOCAL, &cost );
+    ok( !r, "got %u\n", r);
+    ok( cost == 8, "got %d\n", cost );
+
     MsiCloseHandle( hpkg );
 error:
     MsiCloseHandle( hdb );
@@ -9702,7 +9716,7 @@ START_TEST(package)
     test_MsiSetProperty();
     test_MsiApplyMultiplePatches();
     test_MsiApplyPatch();
-    test_MsiEnumComponentCosts();
+    test_costs();
     test_MsiDatabaseCommit();
     test_externalui();
     test_externalui_message();