diff --git a/du3/program.c b/du3/program.c
index 58913e2..3e98437 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -96,7 +96,7 @@ int main()
                         isNegativeSign = true;
                     }
                 }
-                if (isdigit(strBuffer[i]) != 0 || strBuffer[i] == '.') 
+                if (isdigit(strBuffer[i]) != 0 || strBuffer[i] == '.' || isNegativeSign) 
                 {
                     //cislo sa bude zapisovat podla toho, kde sme pri citani riadku...
                     //ak nenasiel ani arit. znamienko = cislo patri ku prvemu operandu (num1)