4 files changed, 4 insertions, 4 deletions
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
index 049e6c114..0dd12ca17 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
+++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
@@ -24,7 +24,7 @@
 
 #include "../../Fl_System_Driver.H"
 #include <stdarg.h>
-#include <string.h>	// strdup
+#include <string.h>  // strdup
 
 /*
  Move everything here that manages the system interface.
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
index d37ec62ff..025d4ee37 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
+++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
@@ -18,7 +18,7 @@
 #include "Fl_WinAPI_System_Driver.H"
 #include <FL/Fl.H>
 #include <FL/fl_utf8.h>
-#include <FL/fl_string.h>	// fl_strdup()
+#include <FL/fl_string.h>  // fl_strdup()
 #include <FL/filename.H>
 #include <FL/Fl_File_Browser.H>
 #include <FL/Fl_File_Icon.H>
diff --git a/src/drivers/X11/Fl_X11_System_Driver.cxx b/src/drivers/X11/Fl_X11_System_Driver.cxx
index 8a308bdb8..6dcaee06d 100644
--- a/src/drivers/X11/Fl_X11_System_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_System_Driver.cxx
@@ -17,7 +17,7 @@
 
 #include "Fl_X11_System_Driver.H"
 #include <FL/Fl_File_Browser.H>
-#include <FL/fl_string.h>	// fl_strdup
+#include <FL/fl_string.h>  // fl_strdup
 #include "../../flstring.h"
 
 #include <X11/Xlib.h>
diff --git a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver_font_xft.cxx b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver_font_xft.cxx
index 6b42b880a..5c88ec100 100644
--- a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver_font_xft.cxx
+++ b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver_font_xft.cxx
@@ -20,7 +20,7 @@
 #include "Fl_Xlib_Graphics_Driver.H"
 #include <FL/Fl.H>
 #include <FL/fl_draw.H>
-#include <FL/fl_string.h>	// fl_strdup()
+#include <FL/fl_string.h>  // fl_strdup()
 #include <FL/platform.H>
 #include "Fl_Font.H"