diff --git a/dietlibc.spec b/dietlibc.spec
index b01a9da..ff6bbc9 100644
--- a/dietlibc.spec
+++ b/dietlibc.spec
@@ -55,6 +55,7 @@ Patch44:	dietlibc-0.31-printFG.patch
 Patch45:	dietlibc-0.31-stat64.patch
 Patch46:	dietlibc-0.31-testsuite.patch
 Patch47:	dietlibc-0.31-lcctime.patch
+Patch48:	dietlibc-0.31-implicitfunc.patch
 BuildRoot:	%_tmppath/%name-%version-%release-buildroot
 %{?with_dynamic:Requires:	dietlibc-lib = %version-%release}
 %{!?with_dynamic:Obsoletes:	dietlibc-lib < %version-%release}
@@ -109,6 +110,7 @@ This package contains the dynamic libraries for dietlibc.
 %patch45 -p1 -b .stat64
 %patch46 -p1 -b .testsuite
 %patch47 -p1 -b .lcctime
+%patch48 -p1 -b .implicitfunc
 
 
 %if %{without ssp}
@@ -130,7 +132,7 @@ sed -i \
 
 sed -i -e 's!strip !: !g' Makefile
 
-%global fixcflags	-fomit-frame-pointer -fno-exceptions -fno-asynchronous-unwind-tables %xtra_fixcflags -Os -g3
+%global fixcflags	-fomit-frame-pointer -fno-exceptions -fno-asynchronous-unwind-tables %xtra_fixcflags -Os -g3 -Werror-implicit-function-declaration
 %global basemakeflags	prefix=%pkglibdir BINDIR=%_bindir MAN1DIR=%_mandir/man1 COMMENT=: CFLAGS="$RPM_OPT_FLAGS %fixcflags $XTRA_CFLAGS" PDIET=%pkglibdir
 %global makeflags	%basemakeflags
 
@@ -140,8 +142,6 @@ done
 
 
 %build
-echo '#include <linux/elf.h>' | gcc -E - -dD || :
-
 make %makeflags all %{?_smp_mflags}
 
 # 'dyn' target is not SMP safe