diff --git a/source/lib/res/file/path.cpp b/source/lib/res/file/path.cpp
index 7100376472..b8ea326605 100644
--- a/source/lib/res/file/path.cpp
+++ b/source/lib/res/file/path.cpp
@@ -192,7 +192,7 @@ LibError file_set_root_dir(const char* argv0, const char* rel_path)
 
 	// .. append DIR_SEP to simplify code that uses n_root_dir
 	n_root_dir_len = strlen(n_root_dir)+1;	// +1 for trailing DIR_SEP
-	assert((n_root_dir_len+1) < sizeof(n_root_dir)); // Just checking
+	debug_assert((n_root_dir_len+1) < sizeof(n_root_dir)); // Just checking
 	n_root_dir[n_root_dir_len-1] = DIR_SEP;
 	// You might think that n_root_dir is already 0-terminated, since it's
 	// static - but that might not be true after calling file_reset_root_dir!
diff --git a/source/lib/sysdep/unix/printf.cpp b/source/lib/sysdep/unix/printf.cpp
index 28ff9c87ef..548b4ba109 100644
--- a/source/lib/sysdep/unix/printf.cpp
+++ b/source/lib/sysdep/unix/printf.cpp
@@ -23,4 +23,4 @@ int vsnprintf2(char* buffer, size_t count, const char* format, va_list argptr)
 		return -1;
 
 	return ret;
-}
\ No newline at end of file
+}
diff --git a/source/lib/sysdep/unix/x.cpp b/source/lib/sysdep/unix/x.cpp
index 15d966b2d4..3f36fad6a9 100644
--- a/source/lib/sysdep/unix/x.cpp
+++ b/source/lib/sysdep/unix/x.cpp
@@ -217,6 +217,8 @@ int clipboard_filter(const SDL_Event *event)
 		return 1;
 
 	/* Handle window-manager specific clipboard events */
+	/* (Note: libsdl must be compiled with X11 support (SDL_VIDEO_DRIVER_X11 in SDL_config.h) -
+	   else you'll get errors like "'struct SDL_SysWMmsg' has no member named 'xevent'") */
 	switch (event->syswm.msg->event.xevent.type) {
 		/* Copy the selection from our buffer to the requested property, and
 		convert to the requested target format */
diff --git a/source/lib/tests/test_cache_adt.h b/source/lib/tests/test_cache_adt.h
index 7cdf4b8e6a..d4365a4f42 100644
--- a/source/lib/tests/test_cache_adt.h
+++ b/source/lib/tests/test_cache_adt.h
@@ -106,4 +106,4 @@ public:
 			}	// else
 		}	// for i
 	}
-};
\ No newline at end of file
+};