diff --git a/parameterManager.cpp b/parameterManager.cpp
index 05aaab7..f1a77fb 100644
--- a/parameterManager.cpp
+++ b/parameterManager.cpp
@@ -939,12 +939,16 @@ bool nothingExists(std::string path)
 
 bool isNumber(std::string number)
 {
-    for (size_t i = 0; i < number.length(); ++i) {
+    bool hasRemovedZero = false;
+    for (size_t i = 0; i < number.length(); ++i)
         if( number[i] == '0') {
             number.erase(i, 1);
             i--;
+            hasRemovedZero=true;
         }
-    }
+    if(hasRemovedZero && number == "")
+        number="0";
+
     return (std::to_string(atoll(number.c_str())) == number) ? true : false;
 }