diff --git a/src/dexorder/order/triggers.py b/src/dexorder/order/triggers.py
index a483b56..6a4ec67 100644
--- a/src/dexorder/order/triggers.py
+++ b/src/dexorder/order/triggers.py
@@ -326,6 +326,7 @@ class PriceLineTrigger (Trigger):
         if is_barrier:
             log.warning('Barriers not supported')
         value_now = line.intercept + line.slope * current_clock.get().timestamp
+        price_now = float(price_now)
         if inverted:
             price_now = 1/price_now
         price_now *= scale