Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -934,12 +934,12 @@
 		;;
 	*-*-msdosdjgpp*)
 		have_processes="no"
 		;;
 	*)
-		AC_CHECK_FUNCS([fork dup2 execvp kill _exit], [
-			AS_IF([test x"$ac_cv_func_fork" = x"yes" \
+		AC_CHECK_FUNCS([vfork dup2 execvp kill _exit], [
+			AS_IF([test x"$ac_cv_func_vfork" = x"yes" \
 			    -a x"$ac_cv_func_pipe" = x"yes" \
 			    -a x"$ac_cv_func_dup2" = x"yes" \
 			    -a x"$ac_cv_func_execvp" = x"yes" \
 			    -a x"$ac_cv_func_kill" = x"yes" \
 			    -a x"$ac_cv_func__exit" = x"yes"], [

Index: src/OFProcess.m
==================================================================
--- src/OFProcess.m
+++ src/OFProcess.m
@@ -197,11 +197,11 @@
 			} @finally {
 				posix_spawn_file_actions_destroy(&actions);
 				posix_spawnattr_destroy(&attr);
 			}
 # else
-			if ((_pid = fork()) == 0) {
+			if ((_pid = vfork()) == 0) {
 				environ = env;
 
 				close(_readPipe[0]);
 				close(_writePipe[1]);
 				dup2(_writePipe[0], 0);