diff --git a/src/lte/model/amc-module.cc b/src/lte/model/amc-module.cc
index 828ba2684..db91ff6ff 100644
--- a/src/lte/model/amc-module.cc
+++ b/src/lte/model/amc-module.cc
@@ -120,7 +120,7 @@ AmcModule::GetCqiFromSpectralEfficiency (double s)
 {
   NS_LOG_FUNCTION (this << s);
   int cqi = 1; // == CqiIndex[0]
-  while (SpectralEfficiencyForCqiIndex[cqi] < s && cqi <= 14)
+  while (cqi < 15 && SpectralEfficiencyForCqiIndex[cqi] < s)
     {
       cqi++;
     }