diff --git a/tests/dlfcn_test.cpp b/tests/dlfcn_test.cpp
index c40a35b..46f5097 100644
--- a/tests/dlfcn_test.cpp
+++ b/tests/dlfcn_test.cpp
@@ -1503,7 +1503,7 @@
                               "/libtest_invalid-rw_load_segment.so";
   void* handle = dlopen(libpath.c_str(), RTLD_NOW);
   ASSERT_TRUE(handle == nullptr);
-  std::string expected_dlerror = std::string("dlopen failed: \"") + libpath + "\": W + E load segments are not allowed";
+  std::string expected_dlerror = std::string("dlopen failed: \"") + libpath + "\": W+E load segments are not allowed";
   ASSERT_STREQ(expected_dlerror.c_str(), dlerror());
 }