diff --git a/crypto/md4/md4.c b/crypto/md4/md4.c
index 2ac2d914f..141415ad4 100644
--- a/crypto/md4/md4.c
+++ b/crypto/md4/md4.c
@@ -64,7 +64,7 @@
 
 void do_fp(FILE *f);
 void pt(unsigned char *md);
-#ifndef _OSD_POSIX
+#if !defined(_OSD_POSIX) && !defined(__DJGPP__)
 int read(int, void *, unsigned int);
 #endif
 
diff --git a/crypto/md5/md5.c b/crypto/md5/md5.c
index 7ed0024ae..563733abc 100644
--- a/crypto/md5/md5.c
+++ b/crypto/md5/md5.c
@@ -64,7 +64,7 @@
 
 void do_fp(FILE *f);
 void pt(unsigned char *md);
-#ifndef _OSD_POSIX
+#if !defined(_OSD_POSIX) && !defined(__DJGPP__)
 int read(int, void *, unsigned int);
 #endif
 
diff --git a/crypto/ripemd/rmd160.c b/crypto/ripemd/rmd160.c
index 4f8b88a18..b0ec57449 100644
--- a/crypto/ripemd/rmd160.c
+++ b/crypto/ripemd/rmd160.c
@@ -64,7 +64,7 @@
 
 void do_fp(FILE *f);
 void pt(unsigned char *md);
-#ifndef _OSD_POSIX
+#if !defined(_OSD_POSIX) && !defined(__DJGPP__)
 int read(int, void *, unsigned int);
 #endif