diff --git a/builtin/builtin_list.c b/builtin/builtin_list.c
index d7a7d02d26e..825c53a3c52 100644
--- a/builtin/builtin_list.c
+++ b/builtin/builtin_list.c
@@ -42,7 +42,7 @@
 
 const struct builtin_s g_builtins[] =
 {
-# include "builtin_list.h"
+#  include "builtin_list.h"
   { NULL, 0, 0, 0 }
 };
 
diff --git a/examples/flowc/flowc.h b/examples/flowc/flowc.h
index 2e7bd07b635..8f9b3eb2bfc 100644
--- a/examples/flowc/flowc.h
+++ b/examples/flowc/flowc.h
@@ -27,7 +27,7 @@
 
 #ifdef EXAMPLES_FLOWC_HOST
 #else
-# include <debug.h>
+#  include <debug.h>
 #endif
 
 /****************************************************************************
diff --git a/examples/nettest/nettest.h b/examples/nettest/nettest.h
index 9a9e8bd587f..d49e7de31b9 100644
--- a/examples/nettest/nettest.h
+++ b/examples/nettest/nettest.h
@@ -29,7 +29,7 @@
 
 #ifdef NETTEST_HOST
 #else
-# include <debug.h>
+#  include <debug.h>
 #endif
 
 /****************************************************************************
diff --git a/examples/tcpblaster/tcpblaster.h b/examples/tcpblaster/tcpblaster.h
index 421f87e6c2c..97d5bd37c98 100644
--- a/examples/tcpblaster/tcpblaster.h
+++ b/examples/tcpblaster/tcpblaster.h
@@ -29,7 +29,7 @@
 
 #ifdef TCPBLASTER_HOST
 #else
-# include <debug.h>
+#  include <debug.h>
 #endif
 
 /****************************************************************************
diff --git a/examples/udp/udp.h b/examples/udp/udp.h
index 35f0f822069..77d1f928972 100644
--- a/examples/udp/udp.h
+++ b/examples/udp/udp.h
@@ -27,7 +27,7 @@
 
 #ifdef EXAMPLES_UDP_HOST
 #else
-# include <debug.h>
+#  include <debug.h>
 #endif
 
 #include <arpa/inet.h>
diff --git a/examples/webserver/webserver_main.c b/examples/webserver/webserver_main.c
index 4fa508c1f25..d13b332eb36 100644
--- a/examples/webserver/webserver_main.c
+++ b/examples/webserver/webserver_main.c
@@ -69,7 +69,7 @@
 /* DHCPC may be used in conjunction with any other feature (or not) */
 
 #ifdef CONFIG_EXAMPLES_WEBSERVER_DHCPC
-# include "netutils/dhcpc.h"
+#  include "netutils/dhcpc.h"
 #endif
 
 /* Include uIP webserver definitions */
diff --git a/graphics/nxwidgets/Doxygen/Doxyfile b/graphics/nxwidgets/Doxygen/Doxyfile
index 45ab1094ef9..b80c12a022c 100644
--- a/graphics/nxwidgets/Doxygen/Doxyfile
+++ b/graphics/nxwidgets/Doxygen/Doxyfile
@@ -63,7 +63,7 @@ CREATE_SUBDIRS         = NO
 OUTPUT_LANGUAGE        = English
 
 # If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
-# include brief member descriptions after the members that are listed in
+#  include brief member descriptions after the members that are listed in
 # the file and class documentation (similar to JavaDoc).
 # Set to NO to disable this.
 
@@ -1084,7 +1084,7 @@ USE_PDFLATEX           = YES
 LATEX_BATCHMODE        = NO
 
 # If LATEX_HIDE_INDICES is set to YES then doxygen will not
-# include the index chapters (such as File Index, Compound Index, etc.)
+#  include the index chapters (such as File Index, Compound Index, etc.)
 # in the output.
 
 LATEX_HIDE_INDICES     = NO
diff --git a/graphics/nxwm/Doxygen/Doxyfile b/graphics/nxwm/Doxygen/Doxyfile
index 45ab1094ef9..b80c12a022c 100644
--- a/graphics/nxwm/Doxygen/Doxyfile
+++ b/graphics/nxwm/Doxygen/Doxyfile
@@ -63,7 +63,7 @@ CREATE_SUBDIRS         = NO
 OUTPUT_LANGUAGE        = English
 
 # If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
-# include brief member descriptions after the members that are listed in
+#  include brief member descriptions after the members that are listed in
 # the file and class documentation (similar to JavaDoc).
 # Set to NO to disable this.
 
@@ -1084,7 +1084,7 @@ USE_PDFLATEX           = YES
 LATEX_BATCHMODE        = NO
 
 # If LATEX_HIDE_INDICES is set to YES then doxygen will not
-# include the index chapters (such as File Index, Compound Index, etc.)
+#  include the index chapters (such as File Index, Compound Index, etc.)
 # in the output.
 
 LATEX_HIDE_INDICES     = NO
diff --git a/include/graphics/curses.h b/include/graphics/curses.h
index 5fd19667c9a..5a6993128c4 100644
--- a/include/graphics/curses.h
+++ b/include/graphics/curses.h
@@ -45,7 +45,7 @@
 #define PDC_RGB   1
 
 #ifdef CONFIG_PDCURSES_WIDE
-# include <wchar.h>
+#  include <wchar.h>
 #endif
 
 /****************************************************************************