diff --git a/device.mk b/device.mk
index 2b9af9e..2d5a5d1 100644
--- a/device.mk
+++ b/device.mk
@@ -56,6 +56,10 @@ PRODUCT_PACKAGES += \
     Launcher3QuickStep \
     ThemePicker
 
+# Calculator from Lineage (packages/apps/ExactCalculator)
+PRODUCT_PACKAGES += \
+    ExactCalculator
+
 # Bluetooth Audio (System-side HAL, sysbta)
 PRODUCT_PACKAGES += \
     audio.sysbta.default \