diff --git a/src/hardware/hameg-hmo/protocol.c b/src/hardware/hameg-hmo/protocol.c
index b00574bc..933432de 100644
--- a/src/hardware/hameg-hmo/protocol.c
+++ b/src/hardware/hameg-hmo/protocol.c
@@ -45,7 +45,7 @@ static const char *hameg_scpi_dialect[] = {
 	[SCPI_CMD_GET_DIG_POD_STATE]	      = ":POD%d:STAT?",
 	[SCPI_CMD_SET_DIG_POD_STATE]	      = ":POD%d:STAT %d",
 	[SCPI_CMD_GET_TRIGGER_SLOPE]	      = ":TRIG:A:EDGE:SLOP?",
-	[SCPI_CMD_SET_TRIGGER_SLOPE]	      = ":TRIG:A:EDGE:SLOP %s",
+	[SCPI_CMD_SET_TRIGGER_SLOPE]	      = ":TRIG:A:TYPE EDGE;:TRIG:A:EDGE:SLOP %s",
 	[SCPI_CMD_GET_TRIGGER_SOURCE]	      = ":TRIG:A:SOUR?",
 	[SCPI_CMD_SET_TRIGGER_SOURCE]	      = ":TRIG:A:SOUR %s",
 	[SCPI_CMD_GET_DIG_CHAN_STATE]	      = ":LOG%d:STAT?",