2 files changed, 1 insertions, 6 deletions
diff --git a/signals.c b/signals.c
index 5757e0c..53a0168 100644
--- a/signals.c
+++ b/signals.c
@@ -88,7 +88,7 @@ in this Software without prior written authorization from The Open Group.
 #define USE_SYSV_SIGNALS
 #endif
 
-#if defined(SCO) || defined(ISC)
+#if defined(SCO)
 #undef SIGTSTP			/* defined, but not the BSD way */
 #endif
 
diff --git a/xsm.h b/xsm.h
index dbd3a1d..e952419 100644
--- a/xsm.h
+++ b/xsm.h
@@ -208,11 +208,6 @@ extern void nomem(void);
 
 #define Strstr strstr
 
-/* Fix ISC brain damage.  When using gcc fdopen isn't declared in <stdio.h>. */
-#if defined(ISC) && __STDC__
-extern FILE *fdopen(int, char const *);
-#endif
-
 #if defined(sun) && defined(SVR4)
 extern int System(char *s);
 #define system(s) System(s)