diff --git a/include/Makefile.am b/include/Makefile.am
index b3c3549..98920b4 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -8,6 +8,7 @@ noinst_HEADERS = pqueue.h
 noinst_HEADERS += compat/dirent.h
 noinst_HEADERS += compat/dirent_msvc.h
 noinst_HEADERS += compat/err.h
+noinst_HEADERS += compat/limits.h
 noinst_HEADERS += compat/netdb.h
 noinst_HEADERS += compat/poll.h
 noinst_HEADERS += compat/readpassphrase.h
diff --git a/include/compat/limits.h b/include/compat/limits.h
new file mode 100644
index 0000000..ca96125
--- /dev/null
+++ b/include/compat/limits.h
@@ -0,0 +1,26 @@
+/*
+ * Public domain
+ * limits.h compatibility shim
+ */
+
+#ifndef LIBCRYPTOCOMPAT_LIMITS_H
+#define LIBCRYPTOCOMPAT_LIMITS_H
+
+#ifdef _MSC_VER
+#if _MSC_VER >= 1900
+#include <../ucrt/limits.h>
+#else
+#include <../include/limits.h>
+#endif
+#else
+#include_next <limits.h>
+#endif
+
+#ifdef __hpux
+#include <sys/param.h>
+#ifndef PATH_MAX
+#define PATH_MAX MAXPATHLEN
+#endif
+#endif
+
+#endif