diff --git a/src/smart.cpp b/src/smart.cpp
index 68df376..d420f28 100644
--- a/src/smart.cpp
+++ b/src/smart.cpp
@@ -36,10 +36,10 @@ void SMART::readSMARTData(Drive *drive)
         sCMD.append(drive->getPath());
         const char *cpComand = sCMD.c_str();
 
-        //Logger::logThis()->info(cpComand);
+        // Logger::logThis()->info(cpComand);
 
         FILE *outputfileSmart = popen(cpComand, "r");
-        size_t len = 0U;     // length of found line
+        size_t len = 0U;    // length of found line
         char *cLine = NULL; // found line
         uint8_t status = 255U;
 
@@ -63,7 +63,7 @@ void SMART::readSMARTData(Drive *drive)
         if (status == 0U)
         {
             // Found S.M.A.R.T. data with this command
-            //Logger::logThis()->info("Found S.M.A.R.T. data with this command");
+            // Logger::logThis()->info("Found S.M.A.R.T. data with this command");
             break;
         }
     }
@@ -106,7 +106,10 @@ bool SMART::parseModelFamily(string sLine, string &modelFamily)
     if (found != string::npos)
     {
         sLine.erase(0U, sLine.find(": ") + 3U);
-        sLine.erase(sLine.length() - 3U, 3U);
+        if (sLine.length() >= 3U)
+        {
+            sLine.erase(sLine.length() - 3U, 3U);
+        }
         modelFamily = sLine;
         return true;
     }
@@ -129,7 +132,10 @@ bool SMART::parseModelName(string sLine, string &modelName)
     if (found != string::npos)
     {
         sLine.erase(0U, sLine.find(": ") + 3U);
-        sLine.erase(sLine.length() - 3U, 3U);
+        if (sLine.length() >= 3U)
+        {
+            sLine.erase(sLine.length() - 3U, 3U);
+        }
         modelName = sLine;
         return true;
     }
@@ -152,7 +158,10 @@ bool SMART::parseSerial(string sLine, string &serial)
     if (found != string::npos)
     {
         sLine.erase(0, sLine.find(": ") + 3);
-        sLine.erase(sLine.length() - 3, 3);
+        if (sLine.length() >= 3U)
+        {
+            sLine.erase(sLine.length() - 3U, 3U);
+        }
         serial = sLine;
         return true;
     }
@@ -175,7 +184,10 @@ bool SMART::parseCapacity(string sLine, uint64_t &capacity)
     if (found != string::npos)
     {
         sLine.erase(0, sLine.find(": ") + 2);
-        sLine.erase(sLine.length() - 1, 1);
+        if (sLine.length() >= 1U)
+        {
+            sLine.erase(sLine.length() - 1U, 1U);
+        }
         capacity = stol(sLine);
         return true;
     }
@@ -198,7 +210,10 @@ bool SMART::parseErrorCount(string sLine, uint32_t &errorCount)
     if (found != string::npos)
     {
         sLine.erase(0U, sLine.find(": ") + 2U);
-        sLine.erase(sLine.length() - 2U, 2U);
+        if (sLine.length() >= 2U)
+        {
+            sLine.erase(sLine.length() - 2U, 2U);
+        }
         errorCount = stol(sLine);
         return true;
     }
@@ -221,7 +236,10 @@ bool SMART::parsePowerOnHours(string sLine, uint32_t &powerOnHours)
     if (found != string::npos)
     {
         sLine.erase(0U, sLine.find(": ") + 2U);
-        sLine.erase(sLine.length() - 1U, 1U);
+        if (sLine.length() >= 1U)
+        {
+            sLine.erase(sLine.length() - 1U, 1U);
+        }
         powerOnHours = stol(sLine);
         return true;
     }
@@ -244,7 +262,10 @@ bool SMART::parsePowerCycles(string sLine, uint32_t &powerCycles)
     if (found != string::npos)
     {
         sLine.erase(0, sLine.find(": ") + 2);
-        sLine.erase(sLine.length() - 2, 2);
+        if (sLine.length() >= 2U)
+        {
+            sLine.erase(sLine.length() - 2U, 2U);
+        }
         powerCycles = stol(sLine);
         return true;
     }
@@ -267,7 +288,10 @@ bool SMART::parseTemperature(string sLine, uint32_t &temperature)
     if (found != string::npos)
     {
         sLine.erase(0U, sLine.find(": ") + 2U);
-        sLine.erase(sLine.length() - 1U, 2U);
+        if (sLine.length() >= 1U)
+        {
+            sLine.erase(sLine.length() - 1U, 2U);
+        }
         if (sLine == "{")
         {
             temperature = 0U; // this drive doesn't support temperature