diff --git a/Makefile.os2 b/Makefile.os2
index e3bf7d8..688d28d 100644
--- a/Makefile.os2
+++ b/Makefile.os2
@@ -3,7 +3,7 @@
 # wmake -f Makefile.os2
 
 CC=wcc386
-CPPFLAGS=-DHAVE_SIGNAL_H
+CPPFLAGS=-DHAVE_SIGNAL_H -DHAVE_STRINGS_H
 CPPFLAGS+= -DSOUND_OS2DART
 
 !ifndef __UNIX__
diff --git a/Makefile.w32 b/Makefile.w32
index adbf122..de939fa 100644
--- a/Makefile.w32
+++ b/Makefile.w32
@@ -3,7 +3,7 @@
 # wmake -f Makefile.w32
 
 CC=wcc386
-CPPFLAGS=-DHAVE_SIGNAL_H
+CPPFLAGS=-DHAVE_SIGNAL_H -DHAVE_STRINGS_H
 CPPFLAGS+= -DSOUND_WIN32
 
 !ifndef __UNIX__
diff --git a/src/options.c b/src/options.c
index 1730c0f..3a79e27 100644
--- a/src/options.c
+++ b/src/options.c
@@ -9,6 +9,9 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
 #include <stdlib.h>
 #include <unistd.h>
 #if defined(HAVE_GETOPT_H) && defined(HAVE_GETOPT_LONG)