diff --git a/src/instructions/mod.rs b/src/instructions/mod.rs
index 0e866d7..759e1f1 100644
--- a/src/instructions/mod.rs
+++ b/src/instructions/mod.rs
@@ -38,7 +38,7 @@ pub fn parse(opcode: u8, arg1: u8, arg2: u8) -> (Instruction, u16, u8) {
         0x12 => (Instruction::LdR16memA(R16mem::DE), 1, 8),
         0x13 => (Instruction::IncR16(R16::DE), 1, 8),
         0x14 => (Instruction::IncR8(R8::D), 1, 4),
-        0x15 => (Instruction::IncR8(R8::D), 1, 4),
+        0x15 => (Instruction::DecR8(R8::D), 1, 4),
         0x16 => (Instruction::LdR8Imm8(R8::D, imm8), 2, 8),
         0x17 => (Instruction::Rla, 1, 4),
         0x18 => (Instruction::JrImm8(imm8 as i8), 2, 12),
@@ -54,7 +54,7 @@ pub fn parse(opcode: u8, arg1: u8, arg2: u8) -> (Instruction, u16, u8) {
         0x22 => (Instruction::LdR16memA(R16mem::HLI), 1, 8),
         0x23 => (Instruction::IncR16(R16::HL), 1, 8),
         0x24 => (Instruction::IncR8(R8::H), 1, 4),
-        0x25 => (Instruction::IncR8(R8::H), 1, 4),
+        0x25 => (Instruction::DecR8(R8::H), 1, 4),
         0x26 => (Instruction::LdR8Imm8(R8::H, imm8), 2, 8),
         0x27 => (Instruction::Daa, 1, 4),
         0x28 => (Instruction::JrCondImm8(Cond::Z, imm8 as i8), 2, 12),