diff --git a/du3/program.c b/du3/program.c
index 06f5a0c..e5aa706 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -67,7 +67,7 @@ int main()
             num2Temp[0] = '\0';
             resultTemp[0] = '\0';
             bool foundEqualSign = false;
-            bool isNotMinus;
+            bool isNegativeSign = false;
 
             char op1 = 'N';  //N = 'None/NIC'
 
@@ -98,21 +98,6 @@ int main()
                 }
                 else if (strBuffer[i] == '=')
                 {
-                    //kontrola - zistenie, ze ci znak '-' symbolizuje zapornu hodnotu (-456) alebo arit. operaciu minus
-                    //zistujeme to na zaklade toho, kde sme v riadku, ak na zaciatku
-                    if (op1 == 'N' && strlen(num1Temp) == 0)
-                    {
-                        isNotMinus = true;
-                    }
-                    //
-                    else if (op1 != 'N' && !foundEqualSign && strlen(num2Temp) == 0)
-                    {
-                        isNotMinus;
-                    }
-                    else if (foundEqualSign && strlen(resultTemp) == 0)
-                    {
-                        isNotMinus;
-                    }
                     foundEqualSign = true;
                     continue;
                 }
@@ -126,6 +111,23 @@ int main()
                     }
                     op1 = strBuffer[i];
                 }
+                if (strBuffer[i] == '-')
+                {
+                    //kontrola - zistenie, ze ci znak '-' symbolizuje zapornu hodnotu (-456) alebo arit. operaciu minus
+                    //zistujeme to na zaklade toho, kde sme v riadku (ak sme na zaciatku num1, num2 alebo vyslednehoCisla, tak sa jedna o minusove znamienko)
+                    if (op1 == 'N' && strlen(num1Temp) == 0)
+                    {
+                        isNegativeSign = true;
+                    }
+                    else if (op1 != 'N' && !foundEqualSign && strlen(num2Temp) == 0)
+                    {
+                        isNegativeSign = true;
+                    }
+                    else if (foundEqualSign && strlen(resultTemp) == 0)
+                    {
+                        isNegativeSign = true;
+                    }
+                }
                 else
                 {
                     isLineInvalid = true;