diff --git a/subprojects/metrics-ipmi-blobs/util.cpp b/subprojects/metrics-ipmi-blobs/util.cpp
index 92cb80c..3057cfb 100644
--- a/subprojects/metrics-ipmi-blobs/util.cpp
+++ b/subprojects/metrics-ipmi-blobs/util.cpp
@@ -256,6 +256,7 @@
     char* virtAddr = reinterpret_cast<char*>(mapBase) + offsetInPage;
     memResult = *(reinterpret_cast<uint32_t*>(virtAddr));
     close(fd);
+    munmap(mapBase, pageSize * 2);
     return true;
 }