diff --git a/completions/slapt-get b/completions/slapt-get
index d8c2592a4fb..1dc09e06608 100644
--- a/completions/slapt-get
+++ b/completions/slapt-get
@@ -60,13 +60,17 @@ _comp_cmd_slapt_get()
             # slapt-get will fail to search for "^name-version"
             # it can search for names only
             local name=${cur%%-*}
-            COMPREPLY=($(LC_ALL=C "$1" -c "$config" --search "^$name" \
-                2>/dev/null | LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"))
+            _comp_compgen_split -l -- "$(
+                LC_ALL=C "$1" -c "$config" --search "^$name" 2>/dev/null |
+                    LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"
+            )"
             return
             ;;
         avl) # --install|-i|
-            COMPREPLY=($(LC_ALL=C "$1" -c "$config" --available \
-                2>/dev/null | LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"))
+            _comp_compgen_split -l -- "$(
+                LC_ALL=C "$1" -c "$config" --available 2>/dev/null |
+                    LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"
+            )"
             return
             ;;
         ins) # --remove|--filelist
diff --git a/completions/slapt-src b/completions/slapt-src
index 63dab92e7e1..cdf00c202c5 100644
--- a/completions/slapt-src
+++ b/completions/slapt-src
@@ -56,12 +56,17 @@ _comp_cmd_slapt_src()
 
     if [[ $cur == *:* ]]; then
         local name=${cur%:*}
-        COMPREPLY=($(LC_ALL=C "$1" --config "$config" --search "^$name" \
-            2>/dev/null | LC_ALL=C command sed -ne \
-            "/^$cur/{s/^$name:\([^ ]*\) .*$/\1/;p;}"))
+        _comp_compgen_split -l -- "$(
+            LC_ALL=C
+            "$1" --config "$config" --search "^$name" 2>/dev/null |
+                command sed -ne "/^$cur/{s/^$name:\([^ ]*\) .*$/\1/;p;}"
+        )"
     else
-        COMPREPLY=($(LC_ALL=C "$1" --config "$config" --search "^$cur" \
-            2>/dev/null | LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"))
+        _comp_compgen_split -l -- "$(
+            LC_ALL=C
+            "$1" --config "$config" --search "^$cur" 2>/dev/null |
+                command sed -ne "/^$cur/{s/ .*$//;p;}"
+        )"
     fi
 } &&
     complete -F _comp_cmd_slapt_src slapt-src