diff --git a/Common/UI/IconCache.cpp b/Common/UI/IconCache.cpp
index 1b47dd196bde..5a43b2674c81 100644
--- a/Common/UI/IconCache.cpp
+++ b/Common/UI/IconCache.cpp
@@ -44,6 +44,7 @@ void IconCache::SaveToFile(FILE *file) {
 
 	for (auto &iter : cache_) {
 		DiskCacheEntry entryHeader;
+		memset(&entryHeader, 0, sizeof(entryHeader));  // valgrind complains about padding bytes
 		entryHeader.keyLen = (uint32_t)iter.first.size();
 		entryHeader.dataLen = (uint32_t)iter.second.data.size();
 		entryHeader.format = iter.second.format;