diff --git a/example/jgrep/main.cpp b/example/jgrep/main.cpp
index ecaffb82..19693479 100644
--- a/example/jgrep/main.cpp
+++ b/example/jgrep/main.cpp
@@ -16,6 +16,7 @@
 
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <boost/regex.hpp>
 #ifdef JM_OLD_IOSTREAM
 #include <iostream.h>
diff --git a/test/c_compiler_checks/wide_posix_api_check.c b/test/c_compiler_checks/wide_posix_api_check.c
index 5a2ea0ce..e1e5df91 100644
--- a/test/c_compiler_checks/wide_posix_api_check.c
+++ b/test/c_compiler_checks/wide_posix_api_check.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <assert.h>
 #include <wchar.h>
+#include <stdlib.h>
 #include <boost/regex.h>
 
 #ifndef BOOST_NO_WREGEX
diff --git a/test/c_compiler_checks/wide_posix_api_check.cpp b/test/c_compiler_checks/wide_posix_api_check.cpp
index 79ed451f..ad898d28 100644
--- a/test/c_compiler_checks/wide_posix_api_check.cpp
+++ b/test/c_compiler_checks/wide_posix_api_check.cpp
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <assert.h>
 #include <wchar.h>
+#include <stdlib.h>
 #include <boost/regex.h>
 
 #ifndef BOOST_NO_WREGEX
diff --git a/test/concepts/concept_check.cpp b/test/concepts/concept_check.cpp
index bf936bc2..5b0ac98b 100644
--- a/test/concepts/concept_check.cpp
+++ b/test/concepts/concept_check.cpp
@@ -18,6 +18,7 @@
 #endif
 #include <boost/concept_check.hpp>
 #include <boost/detail/workaround.hpp>
+#include <cstdlib>
 
 
 int main()