diff --git a/Makefile.am b/Makefile.am
index af6b92b..6a771a5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -405,6 +405,7 @@ nodist_libpcre2_16_la_SOURCES = \
 libpcre2_16_la_CFLAGS = \
   -DPCRE2_CODE_UNIT_WIDTH=16 \
   $(VISIBILITY_CFLAGS) \
+  $(CET_CFLAGS) \
   $(AM_CFLAGS)
 libpcre2_16_la_LIBADD =
 endif # WITH_PCRE2_16
@@ -418,6 +419,7 @@ nodist_libpcre2_32_la_SOURCES = \
 libpcre2_32_la_CFLAGS = \
   -DPCRE2_CODE_UNIT_WIDTH=32 \
   $(VISIBILITY_CFLAGS) \
+  $(CET_CFLAGS) \
   $(AM_CFLAGS)
 libpcre2_32_la_LIBADD =
 endif # WITH_PCRE2_32