diff --git a/bin/makefile-init.sparc b/bin/makefile-init.sparc
index eacdbdd..03f4231 100644
--- a/bin/makefile-init.sparc
+++ b/bin/makefile-init.sparc
@@ -51,8 +51,9 @@ DEBUGFLAGS = # -DSTACKCHECK -DFNSTKCHECK
 
 MACHINEFLAGS = -DOS5 -DAIX -DUSE_DLPI -DNOPIXRECT \
 		-I$(OPENWINHOME)/include -DSYSVSIGNALS -DSYSVONLY \
-		 -DOLD_CURSOR -DLOGINT -DFORKCOMM -DLOCK_X_UPDATES
-		 
+		-DOLD_CURSOR -DLOGINT -DFORKCOMM -DLOCK_X_UPDATES \
+		-DFSERROR
+
 INLINEFLAGS =
 
 FPFLAGS =
diff --git a/bin/makefile-sunos5.sparc-x b/bin/makefile-sunos5.sparc-x
index d9441a9..5255eb7 100644
--- a/bin/makefile-sunos5.sparc-x
+++ b/bin/makefile-sunos5.sparc-x
@@ -47,9 +47,9 @@ MAIN = main
 DEBUGFLAGS = # -DSTACKCHECK -DFNSTKCHECK
 
 MACHINEFLAGS = -DOS5 -DUSE_DLPI -DNOPIXRECT \
-		-DSYSVSIGNALS  \
-		 -DOLD_CURSOR -DNEW_STORAGE -DLOGINT -DFORKCOMM -DLOCK_X_UPDATES
-		 
+		-DSYSVSIGNALS -DFSERROR \
+		-DOLD_CURSOR -DNEW_STORAGE -DLOGINT -DFORKCOMM -DLOCK_X_UPDATES
+
 INLINEFLAGS =
 
 FPFLAGS =