diff --git a/source/tests/CarlaUtils.cpp b/source/tests/CarlaUtils.cpp
index 660348ed3..ba1b72f11 100644
--- a/source/tests/CarlaUtils.cpp
+++ b/source/tests/CarlaUtils.cpp
@@ -36,6 +36,7 @@
 #include "CarlaLv2Utils.hpp"
 #include "CarlaVstUtils.hpp"
 
+#include "CarlaLibUtils.hpp"
 #include "CarlaShmUtils.hpp"
 
 // used in dssi utils
@@ -46,14 +47,13 @@
 
 // #include "CarlaBridgeUtils.hpp"
 // #include "CarlaJuceUtils.hpp"
-// #include "CarlaLibUtils.hpp"
 // #include "CarlaOscUtils.hpp"
 // #include "CarlaStateUtils.hpp"
 
 #if 0
 // -----------------------------------------------------------------------
 
-static void test_CarlaUtils() noexcept
+static void test_CarlaUtils()
 {
     // -------------------------------------------------------------------
     // misc functions
@@ -493,7 +493,7 @@ static void test_CarlaEngineUtils() noexcept
 
 // -----------------------------------------------------------------------
 
-static void test_CarlaLadspaUtils() noexcept
+static void test_CarlaLadspaUtils()
 {
     LADSPA_Descriptor desc;
     carla_zeroStruct(desc);
@@ -550,7 +550,7 @@ static LV2_URID test_lv2_uridMap(LV2_URID_Map_Handle, const char*)
     return 1;
 }
 
-static void test_CarlaLv2Utils() noexcept
+static void test_CarlaLv2Utils()
 {
     Lv2WorldClass& lv2World(Lv2WorldClass::getInstance());
     lv2World.initIfNeeded();
@@ -608,6 +608,25 @@ static void test_CarlaVstUtils() noexcept
 
 // -----------------------------------------------------------------------
 
+static void test_CarlaLibUtils() noexcept
+{
+    void* const libNot = lib_open("/libzzzzz...");
+    assert(libNot == nullptr);
+    carla_stdout("Force lib_open fail error results in: %s", lib_error("/libzzzzz..."));
+
+    void* const lib = lib_open("/usr/lib/liblo.so");
+    CARLA_SAFE_ASSERT_RETURN(lib != nullptr,);
+
+    void* const libS = lib_symbol(lib, "lo_server_new");
+    CARLA_SAFE_ASSERT(libS != nullptr);
+
+    const bool closed = lib_close(lib);
+    CARLA_SAFE_ASSERT(closed);
+}
+
+#if 0
+// -----------------------------------------------------------------------
+
 struct ShmStruct {
     char stringStart[255];
     bool boolean;
@@ -709,6 +728,7 @@ static void test_CarlaShmUtils() noexcept
     assert(! carla_is_shm_valid(shm));
     assert(! carla_is_shm_valid(shma));
 }
+#endif
 
 // -----------------------------------------------------------------------
 // main
@@ -729,7 +749,8 @@ int main()
     test_CarlaVstUtils();
 #endif
 
-    test_CarlaShmUtils();
+    test_CarlaLibUtils();
+    //test_CarlaShmUtils();
 
     return 0;
 }
diff --git a/source/utils/CarlaLibUtils.hpp b/source/utils/CarlaLibUtils.hpp
index 26b9b1447..deeac6983 100644
--- a/source/utils/CarlaLibUtils.hpp
+++ b/source/utils/CarlaLibUtils.hpp
@@ -94,9 +94,11 @@ const char* lib_error(const char* const filename) noexcept
     carla_zeroChar(libError, 2048+1);
 
     try {
-        LPVOID winErrorString;
-        DWORD  winErrorCode = ::GetLastError();
-        ::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, winErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&winErrorString, 0, nullptr);
+        const DWORD winErrorCode  = ::GetLastError();
+        const int   winErrorFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS;
+        LPVOID      winErrorString;
+
+        ::FormatMessage(winErrorFlags, nullptr, winErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&winErrorString, 0, nullptr);
 
         std::snprintf(libError, 2048, "%s: error code %li: %s", filename, winErrorCode, (const char*)winErrorString);
         ::LocalFree(winErrorString);
diff --git a/source/utils/CarlaShmUtils.hpp b/source/utils/CarlaShmUtils.hpp
index 0c719b38c..f2369ee70 100644
--- a/source/utils/CarlaShmUtils.hpp
+++ b/source/utils/CarlaShmUtils.hpp
@@ -151,7 +151,7 @@ void carla_shm_close(shm_t& shm) noexcept
 }
 
 /*
- * Map a shared memory object to @a size bytes and returns its address.
+ * Map a shared memory object to @a size bytes and return the memory address.
  * @note One shared memory object can only have one mapping at a time.
  */
 static inline