diff --git a/test/unittest_stringpair.cc b/test/unittest_stringpair.cc
index 6a4e24b..fc565c9 100644
--- a/test/unittest_stringpair.cc
+++ b/test/unittest_stringpair.cc
@@ -47,7 +47,7 @@ TEST( StringPair, Dynamic )
         spl.push_back( pEp::StringPair{key, value} );
     }
 
-    auto find_by_key = [key](const ::stringpair_t* sp){ return strcmp(sp->key, key)==0; };
+    auto find_by_key = [&key](const ::stringpair_t* sp){ return strcmp(sp->key, key)==0; };
     
     // delete random elements.
     for(unsigned u=0; u<NumberOfElements; ++u)
@@ -56,7 +56,8 @@ TEST( StringPair, Dynamic )
         snprintf(key, 15, "k%u", (u*7) % NumberOfElements); // permutate keys order
         auto q = std::find_if( spl.begin(), spl.end(), find_by_key );
         
-        EXPECT_NE( q, spl.end() ); // element with key is found
+        ASSERT_NE( q, spl.end() ); // element with key is found
+        EXPECT_STREQ( q->key, key);
         spl.erase(q);
         
         q = std::find_if( spl.begin(), spl.end(), find_by_key );