diff --git a/.x-sc_makefile_check b/.x-sc_makefile_check
new file mode 100644
index 000000000..370b1d2c2
--- /dev/null
+++ b/.x-sc_makefile_check
@@ -0,0 +1,3 @@
+lib(guile)?/
+guile-readline/
+srfi/
diff --git a/benchmark-suite/Makefile.am b/benchmark-suite/Makefile.am
index dcadd5869..dc35ed929 100644
--- a/benchmark-suite/Makefile.am
+++ b/benchmark-suite/Makefile.am
@@ -1,6 +1,6 @@
 SCM_BENCHMARKS = benchmarks/0-reference.bm		\
 		 benchmarks/bytevectors.bm		\
-	         benchmarks/continuations.bm		\
+		 benchmarks/continuations.bm		\
                  benchmarks/if.bm			\
                  benchmarks/logand.bm			\
 		 benchmarks/read.bm			\
diff --git a/libguile/Makefile.am b/libguile/Makefile.am
index 80a6245b9..cab55dab1 100644
--- a/libguile/Makefile.am
+++ b/libguile/Makefile.am
@@ -420,7 +420,7 @@ noinst_HEADERS = conv-integer.i.c conv-uinteger.i.c		\
                  srfi-4.i.c srfi-14.i.c				\
                  quicksort.i.c                                  \
                  win32-uname.h win32-dirent.h win32-socket.h	\
-	         private-gc.h private-options.h
+		 private-gc.h private-options.h
 
 # vm instructions
 noinst_HEADERS += vm-engine.c vm-i-system.c vm-i-scheme.c vm-i-loader.c
diff --git a/meta/Makefile.am b/meta/Makefile.am
index dbcf9da7a..ad269ba6d 100644
--- a/meta/Makefile.am
+++ b/meta/Makefile.am
@@ -38,8 +38,8 @@ guile-config: $(srcdir)/guile-config.in
 	guile="@bindir@/`echo guile | $(SED) -e '$(program_transform_name)'`" ;	\
 	cat $(srcdir)/guile-config.in							\
 	| $(SED) -e "s,@pkgconfigdir@,$(pkgconfigdir),g ;			\
-	             s,@""PKG_CONFIG@,$(PKG_CONFIG),g ;				\
-	             s,@installed_guile@,$$guile,g"				\
+		     s,@""PKG_CONFIG@,$(PKG_CONFIG),g ;				\
+		     s,@installed_guile@,$$guile,g"				\
 	> guile-config.out
 	mv guile-config.out guile-config
 	chmod +x guile-config