diff --git a/examples/c/bistromathic/Makefile b/examples/c/bistromathic/Makefile
index c1ac6887..6fbdad44 100644
--- a/examples/c/bistromathic/Makefile
+++ b/examples/c/bistromathic/Makefile
@@ -14,7 +14,8 @@ LDFLAGS = -L/opt/local/lib
 BISON_LOCALEDIR = $(shell $(BISON) $(BISON_FLAGS) --print-localedir)
 CPPFLAGS += -DENABLE_NLS -DBISON_LOCALEDIR='"$(BISON_LOCALEDIR)"'
 
-LIBS = -lreadline -lintl
+LIBS = -lreadline -lm
 
 all: $(BASE)
 
diff --git a/examples/c/bistromathic/parse.y b/examples/c/bistromathic/parse.y
index 925e06f5..b47e859b 100644
--- a/examples/c/bistromathic/parse.y
+++ b/examples/c/bistromathic/parse.y
@@ -7,6 +7,7 @@
   #include <stdio.h>  // printf
   #include <stdlib.h> // calloc
   #include <string.h> // strcmp
+  #include <locale.h>
 
   #include <readline/readline.h>
   #include <readline/history.h>