diff --git a/chartab/GNUmakefile b/chartab/GNUmakefile
index 69563cf..b2f2f63 100644
--- a/chartab/GNUmakefile
+++ b/chartab/GNUmakefile
@@ -1,5 +1,9 @@
 include GNUmakerules
+
+all: chartab ctype-test
+
 chartab:
+ctype-test:
 clean:
 	rm chartab
-install: $(BINDIR)/chartab
+install: $(BINDIR)/chartab $(BINDIR)/ctype-test
diff --git a/chartab/ctype-test.c b/chartab/ctype-test.c
new file mode 100644
index 0000000..224fc97
--- /dev/null
+++ b/chartab/ctype-test.c
@@ -0,0 +1,17 @@
+#include <ctype.h>
+#include <locale.h>
+#include <limits.h>
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+    int i;
+
+    setlocale(LC_ALL, "");
+
+    for (i = 0; i <= UCHAR_MAX; i++) {
+	printf ("%2x: ", i);
+	printf("%c ", isprint(i) ? i : '.');
+	printf("\n");
+    }
+    return 0;
+}