diff --git a/src/cmd/ksh93/sh/main.c b/src/cmd/ksh93/sh/main.c
index 96fe68846..6c6fc41f7 100644
--- a/src/cmd/ksh93/sh/main.c
+++ b/src/cmd/ksh93/sh/main.c
@@ -52,7 +52,7 @@
 /* These routines are referenced by this module */
 static void	exfile(Shell_t*, Sfio_t*,int);
 static void	chkmail(Shell_t *shp, char*);
-#if defined(_lib_fork) && !defined(_NEXT_SOURCE) && !defined(__FreeBSD__)
+#if defined(_lib_fork) && !defined(_NEXT_SOURCE) && !defined(__FreeBSD__) && !defined(__sun)
     static void	fixargs(char**,int);
 #else
 #   define fixargs(a,b)
@@ -697,7 +697,7 @@ static void chkmail(Shell_t *shp, char *files)
 #   define PSTAT	1
 #endif
 
-#if defined(_lib_fork) && !defined(_NEXT_SOURCE) && !defined(__FreeBSD__)
+#if defined(_lib_fork) && !defined(_NEXT_SOURCE) && !defined(__FreeBSD__) && !defined(__sun)
 /*
  * fix up command line for ps command
  *
diff --git a/src/cmd/ksh93/tests/basic.sh b/src/cmd/ksh93/tests/basic.sh
index fd43a0b69..a517400c7 100755
--- a/src/cmd/ksh93/tests/basic.sh
+++ b/src/cmd/ksh93/tests/basic.sh
@@ -708,7 +708,7 @@ getPsOutput() {
 	while [[ $actual == [[:space:]]* ]]; do actual=${actual#?}; done
 	while [[ $actual == *[[:space:]] ]]; do actual=${actual%?}; done
 }
-if	[[ $(uname -s) != FreeBSD ]] &&
+if	[[ ! $(uname -s) =~ ^(FreeBSD|SunOS)$ ]] &&
 	getPsOutput "$$" &&
 	[[ "$SHELL $0" == "$actual"* ]]  # "$SHELL $0" is how shtests invokes this script
 then	expect='./atest 1 2'