diff --git a/src/emulator/execute.c b/src/emulator/execute.c
index e13b7df..37f89e7 100644
--- a/src/emulator/execute.c
+++ b/src/emulator/execute.c
@@ -17,8 +17,8 @@
 #define DPI_WIDEMOV_SHIFT 16
 
 // Prototypes
-void execute_SDT(Machine *state, a64inst_instruction *inst);
-void execute_Branch(Machine *state, a64inst_instruction *inst);
+static void executeSDT(Machine *state, a64inst_instruction *inst);
+static void executeBranch(Machine *state, a64inst_instruction *inst);
 static void executeDPImmediate(Machine *state, a64inst_instruction *inst);
 static void executeDPRegister(Machine *state, a64inst_instruction *inst);
 
@@ -37,7 +37,7 @@ void execute(Machine *state, a64inst_instruction *inst) {
 
         // Execute a branch instruction
         case a64inst_BRANCH:
-            execute_Branch(state, inst);
+            executeBranch(state, inst);
             break;
 
         // Execute a data processing register instruction
@@ -46,7 +46,7 @@ void execute(Machine *state, a64inst_instruction *inst) {
             break;
 
         case a64inst_SINGLETRANSFER: 
-            execute_SDT(state, inst);
+            executeSDT(state, inst);
             break;
 
         // Unknown instruction
@@ -289,7 +289,7 @@ static void executeDPRegister(Machine *state, a64inst_instruction *inst) {
     }
 }
 
-void execute_SDT(Machine *state, a64inst_instruction *inst) {
+static void executeSDT(Machine *state, a64inst_instruction *inst) {
     word address;
     bool isLoad;
     if (inst->data.SingleTransferData.SingleTransferOpType == a64inst_SINGLE_TRANSFER_LOAD_LITERAL) {
@@ -359,7 +359,7 @@ static bool isConditionMet(Machine* state, a64inst_ConditionType cond) {
     }
 }
 
-void execute_Branch(Machine *state, a64inst_instruction *inst) {
+static void executeBranch(Machine *state, a64inst_instruction *inst) {
     switch (inst->data.BranchData.BranchType) {
         case a64inst_UNCONDITIONAL:
             state->pc += signExtend(inst->data.BranchData.processOpData.unconditionalData.unconditionalOffset * 4, 26);