diff --git a/desmume/src/windows/ram_search.cpp b/desmume/src/windows/ram_search.cpp
index fed54396a..627054245 100644
--- a/desmume/src/windows/ram_search.cpp
+++ b/desmume/src/windows/ram_search.cpp
@@ -997,8 +997,12 @@ void CompactAddrs()
 		ListView_SetItemCount(GetDlgItem(RamSearchHWnd,IDC_RAMLIST),ResultCount);
 }
 
-void soft_reset_address_info ()
+void soft_reset_address_info (bool resetPrevValues = false)
 {
+	if (resetPrevValues) {
+		memcpy(buffers->s_prevValues, buffers->s_curValues, sizeof(buffers->s_prevValues));
+		s_prevValuesNeedUpdate = false;
+	}
 	ResetMemoryRegions();
 	memset(buffers->s_numChanges, 0, sizeof(buffers->s_numChanges));
 	CompactAddrs();
@@ -1150,6 +1154,7 @@ void signal_new_size ()
 	{
 		ListView_Update(lv, -1);
 	}
+	InvalidateRect(lv, NULL, TRUE);
 }
 
 
@@ -1698,7 +1703,7 @@ LRESULT CALLBACK RamSearchProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
 					RamSearchSaveUndoStateIfNotTooBig(RamSearchHWnd);
 					int prevNumItems = last_rs_possible;
 
-					soft_reset_address_info();
+					soft_reset_address_info(true);
 
 					if(prevNumItems == last_rs_possible)
 						SetRamSearchUndoType(RamSearchHWnd, 0); // nothing to undo