--- lensfun/libs/lensfun/lens.cpp
+++ lensfun/libs/lensfun/lens.cpp
@@ -301,6 +301,7 @@ const char *lfLens::GetDistortionModelDesc (
             if (params)
                 *params = param_ptlens;
             return "PanoTools lens model";
+        default: break;
     }
 
     if (details)
@@ -335,6 +336,7 @@ const char *lfLens::GetTCAModelDesc (
             if (params)
                 *params = param_linear;
             return "Linear";
+        default: break;
     }
 
     if (details)
@@ -372,6 +374,7 @@ const char *lfLens::GetVignettingModelDesc (
             if (params)
                 *params = param_pa;
             return "6th order polynomial";
+        default: break;
     }
 
     if (details)
@@ -405,6 +408,7 @@ const char *lfLens::GetLensTypeDesc (lfLensType type, const char **details)
             if (details)
                 *details = "Ref: http://wiki.panotools.org/Equirectangular_Projection";
             return "Equirectangular";
+        default: break;
     }
 
     if (details)