diff --git a/src/stdlib_system.F90 b/src/stdlib_system.F90
index c4c3d78d0..6f7d1b6e0 100644
--- a/src/stdlib_system.F90
+++ b/src/stdlib_system.F90
@@ -77,7 +77,7 @@ module stdlib_system
     !! - `process_open_cmd`: Opens a process using a command string.
     !! - `process_open_args`: Opens a process using an array of arguments.
     !! 
-    module type(process_type) function process_open_cmd(cmd, wait, stdin, want_stdout, want_stderr) result(process)
+    module function process_open_cmd(cmd, wait, stdin, want_stdout, want_stderr) result(process)
         !> The command line string to execute.
         character(*), intent(in) :: cmd
         !> Optional input sent to the process via standard input (stdin).
@@ -88,9 +88,11 @@ module type(process_type) function process_open_cmd(cmd, wait, stdin, want_stdou
         logical, optional, intent(in) :: want_stdout
         !> Whether to collect standard error output.
         logical, optional, intent(in) :: want_stderr
+        !> The output process handler.
+        type(process_type) :: process
     end function process_open_cmd
 
-    module type(process_type) function process_open_args(args, wait, stdin, want_stdout, want_stderr) result(process)
+    module function process_open_args(args, wait, stdin, want_stdout, want_stderr) result(process)
         !> List of arguments for the process to execute.
         character(*), intent(in) :: args(:)
         !> Optional input sent to the process via standard input (stdin).
@@ -101,6 +103,8 @@ module type(process_type) function process_open_args(args, wait, stdin, want_std
         logical, optional, intent(in) :: want_stdout
         !> Whether to collect standard error output.
         logical, optional, intent(in) :: want_stderr
+        !> The output process handler.
+        type(process_type) :: process        
     end function process_open_args
 end interface run
 
diff --git a/src/stdlib_system_subprocess.F90 b/src/stdlib_system_subprocess.F90
index 5d815ef77..e57c073a2 100644
--- a/src/stdlib_system_subprocess.F90
+++ b/src/stdlib_system_subprocess.F90
@@ -82,7 +82,7 @@ module subroutine sleep(millisec)
     end subroutine sleep
 
     !> Open a new process
-    module type(process_type) function process_open_cmd(cmd,wait,stdin,want_stdout,want_stderr) result(process)
+    module function process_open_cmd(cmd,wait,stdin,want_stdout,want_stderr) result(process)
         !> The command and arguments
         character(*), intent(in) :: cmd
         !> Optional character input to be sent to the process via pipe
@@ -91,13 +91,15 @@ module type(process_type) function process_open_cmd(cmd,wait,stdin,want_stdout,w
         logical, optional, intent(in) :: wait
         !> Require collecting output
         logical, optional, intent(in) :: want_stdout, want_stderr
+        !> The output process handler
+        type(process_type) :: process        
         
         process = process_open_args([cmd],wait,stdin,want_stdout,want_stderr)
         
     end function process_open_cmd
 
     !> Open a new process
-    module type(process_type) function process_open_args(args,wait,stdin,want_stdout,want_stderr) result(process)
+    module function process_open_args(args,wait,stdin,want_stdout,want_stderr) result(process)
         !> The command and arguments
         character(*), intent(in) :: args(:)
         !> Optional character input to be sent to the process via pipe
@@ -106,6 +108,8 @@ module type(process_type) function process_open_args(args,wait,stdin,want_stdout
         logical, optional, intent(in) :: wait
         !> Require collecting output
         logical, optional, intent(in) :: want_stdout, want_stderr
+        !> The output process handler
+        type(process_type) :: process
         
         real(RTICKS) :: count_rate
         logical :: asynchronous, collect_stdout, collect_stderr, has_stdin