diff --git a/src/Instruction.cpp b/src/Instruction.cpp
index 78f2b36..dbe019e 100644
--- a/src/Instruction.cpp
+++ b/src/Instruction.cpp
@@ -13,22 +13,19 @@ Instruction::Instruction(uint32_t instr) {
 }
 
 extension_t Instruction::check_extension() const {
-	if (((m_instr & 0x0000007F) == 0b0110011)
+    if (((m_instr & 0x0000007F) == 0b0110011)
 			&& ( ((m_instr & 0x7F000000) >> 25) == 0b0000001)) {
 		return M_EXTENSION;
 	} else if ((m_instr & 0x0000007F) == 0b0101111) {
-		return A_EXTENSION;
-	} else if ((m_instr & 0x00000003) == 0b11) {
+        return A_EXTENSION;
+    } else if ((m_instr & 0x00000003) == 0b00) {
+        return C_EXTENSION;
+    } else if ((m_instr & 0x00000003) == 0b01) {
+        return C_EXTENSION;
+    } else if ((m_instr & 0x00000003) == 0b10) {
+        return C_EXTENSION;
+    } else {
 		return BASE_EXTENSION;
-	} else if ((m_instr & 0x00000003) == 0b00) {
-		return C_EXTENSION;
-	} else if ((m_instr & 0x00000003) == 0b01) {
-		return C_EXTENSION;
-	} else if ((m_instr & 0x00000003) == 0b10) {
-		return C_EXTENSION;
-	} else {
-		std::cout << "Unknown\n";
-		return UNKNOWN_EXTENSION;
 	}
 }