diff --git a/src/node/blockstorage.h b/src/node/blockstorage.h
index 2e52716649..e017f3f427 100644
--- a/src/node/blockstorage.h
+++ b/src/node/blockstorage.h
@@ -49,7 +49,7 @@ extern std::atomic_bool fReindex;
 /** Pruning-related variables and constants */
 /** True if we're running in -prune mode. */
 extern bool fPruneMode;
-/** Number of MiB of block files that we're trying to stay below. */
+/** Number of bytes of block files that we're trying to stay below. */
 extern uint64_t nPruneTarget;
 
 // Because validation code takes pointers to the map's CBlockIndex objects, if
diff --git a/src/psbt.h b/src/psbt.h
index 8fda889bb4..4a6d41076f 100644
--- a/src/psbt.h
+++ b/src/psbt.h
@@ -54,7 +54,7 @@ static constexpr uint8_t PSBT_SEPARATOR = 0x00;
 
 // BIP 174 does not specify a maximum file size, but we set a limit anyway
 // to prevent reading a stream indefinitely and running out of memory.
-const std::streamsize MAX_FILE_SIZE_PSBT = 100000000; // 100 MiB
+const std::streamsize MAX_FILE_SIZE_PSBT = 100000000; // 100 MB
 
 // PSBT version number
 static constexpr uint32_t PSBT_HIGHEST_VERSION = 0;