diff --git a/CHANGES.md b/CHANGES.md
index ff7b4ad..f20229e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,8 @@
 # Changes in Mini-XML 4.0.1
 
 - Fixed missing "docdir" definition in makefile.
+- Fixed missing CPPFLAGS, OPTIM, and WARNINGS in CFLAGS in makefile.
+- Fixed configure script issues.
 
 
 # Changes in Mini-XML 4.0.0
diff --git a/Makefile.in b/Makefile.in
index f7845bd..7aad2bd 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -87,7 +87,7 @@ ARFLAGS		=	@ARFLAGS@
 # C compiler and preprocessor...
 #
 
-CFLAGS		=	@CFLAGS@
+CFLAGS		=	@CFLAGS@ $(CPPFLAGS) $(OPTIM) $(WARNINGS)
 CPPFLAGS	=	@CPPFLAGS@
 WARNINGS	=	@WARNINGS@