diff --git a/src/setup.cpp b/src/setup.cpp
index 90f65b2..525f31f 100644
--- a/src/setup.cpp
+++ b/src/setup.cpp
@@ -64,7 +64,7 @@ namespace fea {
 
         if (!config_file_ptr) {
             throw std::runtime_error(
-                    (boost::format("Cannot opwn configuration input file %s.") % config_filename).str()
+                    (boost::format("Cannot open configuration input file %s.") % config_filename).str()
             );
         }
         char readBuffer[65536];