diff --git a/ftservice/gasprice/gasprice.go b/ftservice/gasprice/gasprice.go
index ff8407b7..3d42c83c 100644
--- a/ftservice/gasprice/gasprice.go
+++ b/ftservice/gasprice/gasprice.go
@@ -120,6 +120,10 @@ func (gpo *Oracle) SuggestPrice(ctx context.Context) (*big.Int, error) {
 		price = new(big.Int).Div(prices, weights)
 	}
 
+	if price.Cmp(gpo.defaultPrice) < 0 {
+		price = gpo.defaultPrice
+	}
+
 	gpo.cacheLock.Lock()
 	gpo.lastHead = headHash
 	gpo.lastPrice = price
diff --git a/ftservice/gasprice/gasprice_test.go b/ftservice/gasprice/gasprice_test.go
index 331ba044..f549ed64 100644
--- a/ftservice/gasprice/gasprice_test.go
+++ b/ftservice/gasprice/gasprice_test.go
@@ -74,4 +74,19 @@ func TestSuggestPrice(t *testing.T) {
 		t.Fatal(err)
 	}
 	assert.Equal(t, price, gasPrice)
+
+	// test the Minimum configuration
+
+	cfg1 := Config{
+		Blocks:  5,
+		Default: big.NewInt(10),
+	}
+	gpo = NewOracle(newTestBlockChain(price), cfg1)
+
+	gasPrice, err = gpo.SuggestPrice(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, big.NewInt(10), gasPrice)
+
 }