From a9baa6d742c0425af4fb048cbd85707143227e84 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Wed, 8 Feb 2017 19:16:00 +0000
Subject: [PATCH] Bugfix: Qt/Intro: Pruned nodes never require *more* space

---
 src/qt/intro.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/qt/intro.cpp b/src/qt/intro.cpp
index e45ba2d15..96bddb81e 100644
--- a/src/qt/intro.cpp
+++ b/src/qt/intro.cpp
@@ -127,7 +127,10 @@ Intro::Intro(QWidget *parent) :
     uint64_t pruneTarget = std::max<int64_t>(0, GetArg("-prune", 0));
     requiredSpace = BLOCK_CHAIN_SIZE;
     if (pruneTarget) {
-        requiredSpace = std::ceil(pruneTarget * 1024 * 1024.0 / GB_BYTES);
+        uint64_t prunedGBs = std::ceil(pruneTarget * 1024 * 1024.0 / GB_BYTES);
+        if (prunedGBs <= requiredSpace) {
+            requiredSpace = prunedGBs;
+        }
     }
     requiredSpace += CHAIN_STATE_SIZE;
     ui->sizeWarningLabel->setText(ui->sizeWarningLabel->text().arg(tr(PACKAGE_NAME)).arg(requiredSpace));