From a2e3711ce09fce2e148addc78105b2b659f3f2fe Mon Sep 17 00:00:00 2001
From: Roman <roman@osmosis.team>
Date: Tue, 23 May 2023 20:05:59 -0400
Subject: [PATCH] fix: legacy dec power mut zero exponent precision (#16266)

---
 math/CHANGELOG.md | 4 ++++
 math/dec.go       | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/math/CHANGELOG.md b/math/CHANGELOG.md
index 0c7a63d2bc..b337d786d4 100644
--- a/math/CHANGELOG.md
+++ b/math/CHANGELOG.md
@@ -36,6 +36,10 @@ Ref: https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.j
 
 ## [Unreleased]
 
+### Bug Fixes
+
+* [#16266](https://github.com/cosmos/cosmos-sdk/pull/16266) fix: legacy dec power mut zero exponent precision.
+
 ## [math/v1.0.1](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.1) - 2023-05-15
 
 ### Improvements
diff --git a/math/dec.go b/math/dec.go
index 0f6918bd4b..d92b0042f3 100644
--- a/math/dec.go
+++ b/math/dec.go
@@ -490,7 +490,8 @@ func (d LegacyDec) Power(power uint64) LegacyDec {
 
 func (d LegacyDec) PowerMut(power uint64) LegacyDec {
 	if power == 0 {
-		d.SetInt64(1)
+		// Set to 1 with the correct precision.
+		d.i.Set(precisionReuse)
 		return d
 	}
 	tmp := LegacyOneDec()