diff --git a/crypto/md4/md4.c b/crypto/md4/md4.c
index 2ac2d914ffac808848648d6d1381b1c87ef81858..141415ad4df6731283b322f831ab01bc82e34b2f 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 7ed0024ae195d5674884feb812e8edd9f845a60a..563733abc5061e47a884e0d85540d69df211244c 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 4f8b88a18ac1b6f07c522ef33ab896fef3314387..b0ec57449890b5d14f66d6adde93a6f6837d402f 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