diff --git a/src/parallel b/src/parallel
index 0ea8ac0e..87a70293 100755
--- a/src/parallel
+++ b/src/parallel
@@ -1660,7 +1660,7 @@ sub shell_quote_scalar {
 	if(defined $a) {
 	    if(($a =~ s/'/''/g)
 	       +
-	       ($a =~ s/[\n\002-\011\013-\032\\\#\?\`\(\)\{\}\[\]\^\*\<\=\>\~\|\; \"\!\$\&\202-\377]/'$&'/go)) {
+	       ($a =~ s/[\n\002-\011\013-\032\\\#\?\`\(\)\{\}\[\]\^\*\<\=\>\~\|\; \"\!\$\&\202-\377]+/'$&'/go)) {
 		# A string was replaced
 		# No need to test for "" or \0
 	    } elsif($a eq "") {
diff --git a/testsuite/tests-to-run/parallel-local-0.3s.sh b/testsuite/tests-to-run/parallel-local-0.3s.sh
index d9944ca0..2d4e86ec 100644
--- a/testsuite/tests-to-run/parallel-local-0.3s.sh
+++ b/testsuite/tests-to-run/parallel-local-0.3s.sh
@@ -158,6 +158,19 @@ echo '### bug #44995: parallel echo {#} ::: 1 2 ::: 1 2'
 
 parallel -k echo {#} ::: 1 2 ::: 1 2
 
+echo '**'
+
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=bash parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=fish parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=ash parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=dash parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=sh parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=rc parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=csh parallel -0 echo
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=tcsh parallel -0 echo
+
+echo '**'
+
 EOF
 echo '### 1 .par file from --files expected'
 find /tmp{/*,}/*.{par,tms,tmx} 2>/dev/null -mmin -10 | wc -l
diff --git a/testsuite/wanted-results/parallel-local-0.3s b/testsuite/wanted-results/parallel-local-0.3s
index 44f0d0a2..3fc57f45 100644
--- a/testsuite/wanted-results/parallel-local-0.3s
+++ b/testsuite/wanted-results/parallel-local-0.3s
@@ -332,5 +332,33 @@ parallel -k echo {#} ::: 1 2 ::: 1 2
 2
 3
 4
+echo '**'
+**
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=bash parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=fish parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=ash parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=dash parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=sh parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=rc parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=csh parallel -0 echo
+"#&/
+()*=?'
+printf '"#&/\n()*=?'"'" | PARALLEL_SHELL=tcsh parallel -0 echo
+"#&/
+()*=?'
+echo '**'
+**
 ### 1 .par file from --files expected
 1