diff --git a/op25Handler.py b/op25Handler.py
index 0f54491..f9717a1 100644
--- a/op25Handler.py
+++ b/op25Handler.py
@@ -36,13 +36,13 @@ class OP25Handler: #(threading.Thread):
         if self.HTTP_ENABLED:
             self.OP25Proc = subprocess.Popen([f"./rx.py", "--args", "rtl", "-N", "LNA:49", "-s",
                                               "200000", "-o", "25600", "-U", "-f", f"{self.Frequency}e6", "-X", "-2",
-                                              "-l" "http:0.0.0.0:8080"], shell=True, stdout=subprocess.DEVNULL,
+                                              "-l" "http:0.0.0.0:8080"], shell=False, stdout=subprocess.DEVNULL,
                                              stderr=subprocess.STDOUT)
 
         else:
             self.OP25Proc = subprocess.Popen([f"./rx.py", "--args", "rtl", "-N", "LNA:49", "-s",
                                               "200000", "-o", "25600", "-U", "-f", f"{self.Frequency}e6", "-X", "-2"],
-                                             shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)
+                                             shell=False, stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)
 
         os.chdir(cwd)