diff --git a/core/src/consensus.rs b/core/src/consensus.rs
index 0b29b3651..74c12ecda 100644
--- a/core/src/consensus.rs
+++ b/core/src/consensus.rs
@@ -88,13 +88,13 @@ pub const MAX_BLOCK_WEIGHT: usize = 80_000;
 /// Hundreds of inputs + 1 output might be slow to validate (issue#258)
 pub const MAX_BLOCK_INPUTS: usize = 300_000; // soft fork down when too_high
 
-/// Maixmum inputs for a transaction
+/// Maximum inputs for a transaction
 pub const MAX_TX_INPUTS: u64 = 500;
 
-/// Maixmum outputs for a transaction
+/// Maximum outputs for a transaction
 pub const MAX_TX_OUTPUTS: u64 = 500; // wallet uses 500 as max
 
-/// Maixmum kernels for a transaction
+/// Maximum kernels for a transaction
 pub const MAX_TX_KERNELS: u64 = 2048;
 
 /// Whether a block exceeds the maximum acceptable weight
diff --git a/core/src/core/pmmr.rs b/core/src/core/pmmr.rs
index 0b5cfc62a..561694995 100644
--- a/core/src/core/pmmr.rs
+++ b/core/src/core/pmmr.rs
@@ -91,10 +91,10 @@ where
 }
 
 /// Maixmum peeks for a Merkle proof
-pub const MAX_PEAKS: u64 = 300_000;
+pub const MAX_PEAKS: u64 = 100;
 
 /// Maixmum path for a Merkle proof
-pub const MAX_PATH: u64 = 300_000;
+pub const MAX_PATH: u64 = 100;
 
 /// A Merkle proof.
 /// Proves inclusion of an output (node) in the output MMR.