diff --git a/src/lisp/lexer.cpp b/src/lisp/lexer.cpp
index db14422c1..61eff52b9 100644
--- a/src/lisp/lexer.cpp
+++ b/src/lisp/lexer.cpp
@@ -44,7 +44,8 @@ namespace lisp
             nextChar();
         }
         catch(EOFException& e)
-        {}
+        {(void)e;  // avoid 'unreferenced local variable' warning
+        }
     }
 
 //-----------------------------------------------------------------------------
diff --git a/src/user_config.cpp b/src/user_config.cpp
index 6d4fa7f44..200628840 100644
--- a/src/user_config.cpp
+++ b/src/user_config.cpp
@@ -370,6 +370,7 @@ void UserConfig::loadConfig(const std::string& filename)
     }
     catch(std::exception& e)
     {
+        (void)e;  // avoid warning about unreferenced local variable
         printf(_("Config file '%s' does not exist, it will be created.\n"), 
                filename.c_str());
         delete root;
diff --git a/src/widget.cpp b/src/widget.cpp
index 5651a48c8..73ba288cb 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -305,8 +305,6 @@ void Widget::update(const float DELTA)
         size_t line_start = 0;
         bool draw;
         bool out_of_rect = false;
-        float top, bottom;
-        int text_height;
 
         glEnable( GL_SCISSOR_TEST );
         do