diff -up ./src/pstree.c.ori ./src/pstree.c

--- ./src/pstree.c.ori	2020-05-12 16:19:07.517885359 +0200

+++ ./src/pstree.c	2020-05-12 16:19:35.753226398 +0200

@@ -469,8 +469,12 @@ static void set_args(PROC * this, const

     }

     this->argc = 0;

     for (i = 0; i < size - 1; i++)

-        if (!args[i])

+        if (!args[i]) {

             this->argc++;

+            /* now skip consecutive NUL */

+            while(!args[i] && (i < size -1 ))

+                i++;

+        }

     if (!this->argc)

         return;

     if (!(this->argv = malloc(sizeof(char *) * this->argc))) {