diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchBuilder.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchBuilder.kt
index c306ecde4..14ee37c60 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchBuilder.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchBuilder.kt
@@ -260,7 +260,7 @@ class AndroidResearchBuilder(
 						}
 
 						if (!simulate) {
-							capability.ply.experienceLevel -= experience
+							capability.ply.giveExperienceLevels(-experience)
 						}
 					}
 
@@ -300,6 +300,10 @@ class AndroidResearchBuilder(
 						return true
 					}
 
+					if (experience > 0) {
+						capability.ply.giveExperienceLevels(experience)
+					}
+
 					for (item in items) {
 						val leftover = item.copy()
 						capability.ply.inventory.add(leftover)