diff --git a/contrib/spoa_server/ps_lua.c b/contrib/spoa_server/ps_lua.c
index e7de2d9..2d37d9b 100644
--- a/contrib/spoa_server/ps_lua.c
+++ b/contrib/spoa_server/ps_lua.c
@@ -396,7 +396,7 @@
 		lua_pop(L, 1);
 		return 0;
 	default:
-		fprintf(stderr, "lua unknonwn error: %s\n", lua_tostring(L, 0));
+		fprintf(stderr, "lua unknown error: %s\n", lua_tostring(L, 0));
 		lua_pop(L, 1);
 		return 0;
 	}
@@ -488,7 +488,7 @@
 		case LUA_ERRERR:
 			msg_fmt = msg_fmt ? msg_fmt : "Lua message handler error";
 		default:
-			msg_fmt = msg_fmt ? msg_fmt : "Lua unknonwn error";
+			msg_fmt = msg_fmt ? msg_fmt : "Lua unknown error";
 			msg = lua_tostring(L, -1);
 			if (msg == NULL)
 				msg = "Unknown error";
diff --git a/contrib/spoa_server/ps_python.c b/contrib/spoa_server/ps_python.c
index 0a9fbff..2dbe5ee 100644
--- a/contrib/spoa_server/ps_python.c
+++ b/contrib/spoa_server/ps_python.c
@@ -50,7 +50,7 @@
 
 	if (!PyArg_ParseTuple(args, "sO!", &name, &PyFunction_Type, &ref))
 		return NULL;
-	Py_XINCREF(ref); /* because the function is intenally refrenced */
+	Py_XINCREF(ref); /* because the function is internally referenced */
 
 	ps_register_message(&ps_python_bindings, name, (void *)ref);
 
@@ -602,7 +602,7 @@
 		}
 	}
 
-	/* Dictionnary { args = <list-of-args> } for the function */
+	/* Dictionary { args = <list-of-args> } for the function */
 
 	fkw = PyDict_New();
 	if (fkw == NULL) {
diff --git a/contrib/spoa_server/spoa.c b/contrib/spoa_server/spoa.c
index f36c3db..9a8ffd0 100644
--- a/contrib/spoa_server/spoa.c
+++ b/contrib/spoa_server/spoa.c
@@ -51,7 +51,7 @@
 	SPOE_FRM_T_AGENT_ACK
 };
 
-/* Errors triggerd by SPOE applet */
+/* Errors triggered by SPOE applet */
 enum spoe_frame_error {
 	SPOE_FRM_ERR_NONE = 0,
 	SPOE_FRM_ERR_IO,
@@ -501,7 +501,7 @@
 		return -1;
 	}
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	return idx;
 }
@@ -822,7 +822,7 @@
 }
 
 /* This function is a little bit ugly,
- * TODO: improve the response without copying the bufer
+ * TODO: improve the response without copying the buffer
  */
 static int commit_agentack(struct worker *w)
 {
@@ -872,7 +872,7 @@
 	DEBUG("Notify frame received: stream-id=%u - frame-id=%u",
 	      w->stream_id, w->frame_id);
 
-	/* Prepara ack, if the processing fails tha ack will be cancelled */
+	/* Prepare ack, if the processing fails the ack will be cancelled */
 	prepare_agentack(w);
 
 	/* Loop on messages */
@@ -915,7 +915,7 @@
 			idx += i;
 		}
 
-		/* Lookup for existsing bindings. If no existing message
+		/* Lookup for existing bindings. If no existing message
 		 * where found, does nothing.
 		 */
 		for (msg = ps_messages; msg; msg = msg->next)