diff --git a/src/main/c/Stefan/blackjack.c b/src/main/c/Stefan/blackjack.c
index 96687c6..397eea0 100644
--- a/src/main/c/Stefan/blackjack.c
+++ b/src/main/c/Stefan/blackjack.c
@@ -32,6 +32,9 @@ int blackjack(){
 }
 
 int subtractBetFromBalanceBJ(int bet, int balance){
+    if(balance - bet < 0){
+        return 0;
+    }
     return balance - bet;
 }
 
diff --git a/src/test/c/Stefan/test_blackjack.c b/src/test/c/Stefan/test_blackjack.c
index a106eed..26f0412 100644
--- a/src/test/c/Stefan/test_blackjack.c
+++ b/src/test/c/Stefan/test_blackjack.c
@@ -362,4 +362,19 @@ void test_subtract_bet_1_from_balance_100000() {
     //assert
     TEST_ASSERT_EQUAL_INT(expected_result, actual_result);
 
+}
+
+void test_subtract_bet_10_from_balance_1() {
+
+    //arrange
+    int bet = 10;
+    int balance = 1;
+    int expected_result = 0;
+
+    //act
+    int actual_result = subtractBetFromBalanceBJ(bet, balance);
+
+    //assert
+    TEST_ASSERT_EQUAL_INT(expected_result, actual_result);
+
 }
\ No newline at end of file