diff --git a/configure b/configure
index 7f3faeba..48bf28aa 100755
--- a/configure
+++ b/configure
@@ -4853,7 +4853,7 @@ printf "%s\n" "#define uint64_t $ac_cv_c_uint64_t" >>confdefs.h
 
 
 # if CXXFLAGS is undefined, set it to our preferred default flags
-: ${CXXFLAGS="-Wall -Wextra -Wunused -Wshadow -O2"}
+: ${CXXFLAGS="-Wall -Wextra -Wunused -O2"}
 
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
diff --git a/configure.ac b/configure.ac
index e63fd04c..8952678a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,7 +11,7 @@ AC_TYPE_UINT32_T
 AC_TYPE_UINT64_T
 
 # if CXXFLAGS is undefined, set it to our preferred default flags
-: ${CXXFLAGS="-Wall -Wextra -Wunused -Wshadow -O2"}
+: ${CXXFLAGS="-Wall -Wextra -Wunused -O2"}
 
 AC_LANG([C++])
 AC_PROG_CXX
diff --git a/lib/Make b/lib/Make
index a1ca475d..ff43bad7 100644
--- a/lib/Make
+++ b/lib/Make
@@ -10,7 +10,7 @@ CPP=c++
 AR=ar
 RANLIB=ranlib
 COFLAGS=-O2
-CWFLAGS=-Wall -Wunused -Wextra -Wshadow
+CWFLAGS=-Wall -Wunused -Wextra
 CIFLAGS=-I. -I../include
 CMFLAGS=
 # CMFLAGS=-DDEBUG
diff --git a/src/Make b/src/Make
index 4b7dcf52..ebe8e0af 100644
--- a/src/Make
+++ b/src/Make
@@ -9,7 +9,7 @@ CPP=c++
 INCS=../include/reflex/convert.h ../include/reflex/debug.h ../include/reflex/error.h ../include/reflex/input.h ../include/reflex/pattern.h ../include/reflex/utf8.h
 LIBS=../lib/libreflex.a
 COFLAGS=-O2
-CWFLAGS=-Wall -Wunused -Wextra -Wshadow
+CWFLAGS=-Wall -Wunused -Wextra
 CIFLAGS=-I. -I../include
 CMFLAGS=
 # CMFLAGS=-DDEBUG