diff --git a/ChangeLog b/ChangeLog
index 8ea852b..ed4c066 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2022-11-30  Alex Kotov  <kotovalexarian@gmail.com>
+
+	* configure.ac: Fix CFLAGS setting
+
 2022-11-29  Alex Kotov  <kotovalexarian@gmail.com>
 
 	* include/kernaux/macro.h: Rename macro "KERNAUX_PACKING_ATTR" to
diff --git a/configure.ac b/configure.ac
index 76b4d4c..c8dad83 100644
--- a/configure.ac
+++ b/configure.ac
@@ -305,9 +305,9 @@ AS_IF([test "$with_units"        = no], [AC_SUBST([comment_line_units],        [
 # Set build flags #
 ###################
 
-AC_DEFUN([do_enable_freestanding],  [CFLAGS+=' -nostdlib -ffreestanding -fno-pic -fno-stack-protector '])
-AC_DEFUN([do_disable_freestanding], [CFLAGS+=' -fpic '])
-AS_IF([test "$enable_freestanding" = yes], do_enable_freestanding, do_disable_freestanding)
+AS_IF([test "$enable_freestanding" = yes],
+  [CFLAGS="$CFLAGS -nostdlib -ffreestanding -fno-pic -fno-stack-protector "],
+  [CFLAGS="$CFLAGS -fpic "])
 
 
 
diff --git a/shared.am b/shared.am
index a64db6d..767a8db 100644
--- a/shared.am
+++ b/shared.am
@@ -18,10 +18,3 @@ endif
 if ENABLE_WERROR
 AM_CFLAGS += -Werror
 endif
-
-# TODO: DRY (configure.ac)
-if ENABLE_FREESTANDING
-AM_CFLAGS += -nostdlib -ffreestanding -fno-pic -fno-stack-protector
-else
-AM_CFLAGS += -fpic
-endif