diff --git a/common/main/aistruct.h b/common/main/aistruct.h
index b60a4c9e2..ad85aff81 100644
--- a/common/main/aistruct.h
+++ b/common/main/aistruct.h
@@ -185,12 +185,7 @@ struct ai_local : public prohibit_void_ptr<ai_local>
 	uint8_t previous_visibility;             // Visibility of player last time we checked.
 	uint8_t rapidfire_count;                 // number of shots fired rapidly
 	ai_mode mode;                            // current mode within behavior
-#if defined(DXX_BUILD_DESCENT_I)
 	segnum_t      goal_segment;                    // goal segment for current path
-	fix        last_see_time; // For sound effects, time at which player last seen, attacked
-#elif defined(DXX_BUILD_DESCENT_II)
-	segnum_t        goal_segment;                  // goal segment for current path
-#endif
 	fix        next_action_time;              // time in seconds until something happens, mode dependent
 	fix        next_fire;                     // time in seconds until can fire again
 #if defined(DXX_BUILD_DESCENT_II)
diff --git a/similar/main/ai.cpp b/similar/main/ai.cpp
index 08fa55d30..539bdcabf 100644
--- a/similar/main/ai.cpp
+++ b/similar/main/ai.cpp
@@ -4380,7 +4380,7 @@ static void state_ai_local_to_ai_local_rw(ai_local *ail, ai_local_rw *ail_rw)
 	ail_rw->rapidfire_count            = ail->rapidfire_count;
 	ail_rw->goal_segment               = ail->goal_segment;
 #if defined(DXX_BUILD_DESCENT_I)
-	ail_rw->last_see_time              = ail->last_see_time;
+	ail_rw->last_see_time              = 0;
 	ail_rw->last_attack_time           = 0;
 #elif defined(DXX_BUILD_DESCENT_II)
 	ail_rw->next_fire2                 = ail->next_fire2;
@@ -4561,7 +4561,7 @@ static void ai_local_read_swap(ai_local *ail, int swap, PHYSFS_file *fp)
 		ail->previous_visibility = PHYSFSX_readByte(fp);
 		ail->rapidfire_count = PHYSFSX_readByte(fp);
 		ail->goal_segment = PHYSFSX_readSXE16(fp, swap);
-		ail->last_see_time = PHYSFSX_readSXE32(fp, swap);
+		PHYSFSX_readSXE32(fp, swap);
 		PHYSFSX_readSXE32(fp, swap);
 		ail->next_action_time = PHYSFSX_readSXE32(fp, swap);
 		ail->next_fire = PHYSFSX_readSXE32(fp, swap);