diff --git a/nbfi/Makefile b/nbfi/Makefile
index 011e822..7873fb4 100644
--- a/nbfi/Makefile
+++ b/nbfi/Makefile
@@ -1,4 +1,4 @@
-override CFLAGS+=-Werror -Wall -g -fPIC -O2 -DNDEBUG -std=c99 -ftrapv -Wfloat-equal -Wundef -Wwrite-strings -Wconversion -Wuninitialized
+override CFLAGS+=-Werror -Wall -g -fPIC -O2 -DNDEBUG -std=c99 -ftrapv -Wfloat-equal -Wundef -Wwrite-strings -Wconversion -Wuninitialized -pedantic
 PREFIX=/usr/bin
 BUILDDIR=bin/
 
diff --git a/vvm/Makefile b/vvm/Makefile
index 9d793f3..09fa6e7 100644
--- a/vvm/Makefile
+++ b/vvm/Makefile
@@ -1,4 +1,4 @@
-override CFLAGS+=-Werror -Wall -g -fPIC -O2 -DNDEBUG -ftrapv -Wfloat-equal -Wundef -Wwrite-strings -Wconversion -Wuninitialized
+override CFLAGS+=-Werror -Wall -g -fPIC -O2 -DNDEBUG -ftrapv -Wfloat-equal -Wundef -Wwrite-strings -Wconversion -Wuninitialized -pedantic
 DEBUG+=-DDEBUG_ON
 PREFIX=/usr/bin
 BUILDDIR=bin/