diff --git a/oi/CodeGen.cpp b/oi/CodeGen.cpp
index eda49a0..9505841 100644
--- a/oi/CodeGen.cpp
+++ b/oi/CodeGen.cpp
@@ -105,48 +105,6 @@ struct OIArray {
 )";
 }
 
-void defineJitLog(FeatureSet features, std::string& code) {
-  if (features[Feature::JitLogging]) {
-    code += R"(
-extern int logFile;
-
-void __jlogptr(uintptr_t ptr) {
-  static constexpr char hexdigits[] = "0123456789abcdef";
-  static constexpr size_t ptrlen = 2 * sizeof(ptr);
-
-  static char hexstr[ptrlen + 1] = {};
-
-  size_t i = ptrlen;
-  while (i--) {
-    hexstr[i] = hexdigits[ptr & 0xf];
-    ptr = ptr >> 4;
-  }
-  hexstr[ptrlen] = '\n';
-  write(logFile, hexstr, sizeof(hexstr));
-}
-
-#define JLOG(str)                           \
-  do {                                      \
-    if (__builtin_expect(logFile, 0)) {     \
-      write(logFile, str, sizeof(str) - 1); \
-    }                                       \
-  } while (false)
-
-#define JLOGPTR(ptr)                    \
-  do {                                  \
-    if (__builtin_expect(logFile, 0)) { \
-      __jlogptr((uintptr_t)ptr);        \
-    }                                   \
-  } while (false)
-)";
-  } else {
-    code += R"(
-#define JLOG(str)
-#define JLOGPTR(ptr)
-)";
-  }
-}
-
 void addIncludes(const TypeGraph& typeGraph,
                  FeatureSet features,
                  std::string& code) {
@@ -1137,7 +1095,7 @@ void CodeGen::generate(
   }
   addIncludes(typeGraph, config_.features, code);
   defineArray(code);
-  defineJitLog(config_.features, code);
+  FuncGen::DefineJitLog(code, config_.features);
 
   if (config_.features[Feature::TypedDataSegment]) {
     if (config_.features[Feature::Library]) {
diff --git a/oi/FuncGen.cpp b/oi/FuncGen.cpp
index f299bc1..85045fb 100644
--- a/oi/FuncGen.cpp
+++ b/oi/FuncGen.cpp
@@ -157,6 +157,48 @@ extern uintptr_t cookieValue;
   code.append(vars);
 }
 
+void FuncGen::DefineJitLog(std::string& code, FeatureSet features) {
+  if (features[Feature::JitLogging]) {
+    code += R"(
+extern int logFile;
+
+void __jlogptr(uintptr_t ptr) {
+  static constexpr char hexdigits[] = "0123456789abcdef";
+  static constexpr size_t ptrlen = 2 * sizeof(ptr);
+
+  static char hexstr[ptrlen + 1] = {};
+
+  size_t i = ptrlen;
+  while (i--) {
+    hexstr[i] = hexdigits[ptr & 0xf];
+    ptr = ptr >> 4;
+  }
+  hexstr[ptrlen] = '\n';
+  write(logFile, hexstr, sizeof(hexstr));
+}
+
+#define JLOG(str)                           \
+  do {                                      \
+    if (__builtin_expect(logFile, 0)) {     \
+      write(logFile, str, sizeof(str) - 1); \
+    }                                       \
+  } while (false)
+
+#define JLOGPTR(ptr)                    \
+  do {                                  \
+    if (__builtin_expect(logFile, 0)) { \
+      __jlogptr((uintptr_t)ptr);        \
+    }                                   \
+  } while (false)
+)";
+  } else {
+    code += R"(
+#define JLOG(str)
+#define JLOGPTR(ptr)
+)";
+  }
+}
+
 void FuncGen::DeclareStoreData(std::string& testCode) {
   testCode.append("void StoreData(uintptr_t data, size_t& dataSegOffset);\n");
 }
diff --git a/oi/FuncGen.h b/oi/FuncGen.h
index 631a316..19eb4f6 100644
--- a/oi/FuncGen.h
+++ b/oi/FuncGen.h
@@ -30,6 +30,7 @@ namespace oi::detail {
 class FuncGen {
  public:
   static void DeclareExterns(std::string& code);
+  static void DefineJitLog(std::string& code, FeatureSet features);
 
   static void DeclareStoreData(std::string& testCode);
   static void DefineStoreData(std::string& testCode);
diff --git a/oi/OICodeGen.cpp b/oi/OICodeGen.cpp
index c924734..baffd70 100644
--- a/oi/OICodeGen.cpp
+++ b/oi/OICodeGen.cpp
@@ -3031,29 +3031,6 @@ bool OICodeGen::generateJitCode(std::string& code) {
       #define SAVE_SIZE(val)
       #define SAVE_DATA(val)    StoreData(val, returnArg)
     )");
-
-    if (config.features[Feature::JitLogging]) {
-      code.append(R"(
-        #define JLOG(str)                           \
-          do {                                      \
-            if (__builtin_expect(logFile, 0)) {     \
-              write(logFile, str, sizeof(str) - 1); \
-            }                                       \
-          } while (false)
-
-        #define JLOGPTR(ptr)                    \
-          do {                                  \
-            if (__builtin_expect(logFile, 0)) { \
-              __jlogptr((uintptr_t)ptr);        \
-            }                                   \
-          } while (false)
-      )");
-    } else {
-      code.append(R"(
-        #define JLOG(str)
-        #define JLOGPTR(ptr)
-      )");
-    }
   } else {
     code.append(R"(
       #define SAVE_SIZE(val)    AddData(val, returnArg)
@@ -3063,6 +3040,8 @@ bool OICodeGen::generateJitCode(std::string& code) {
     )");
   }
 
+  FuncGen::DefineJitLog(code, config.features);
+
   // The purpose of the anonymous namespace within `OIInternal` is that
   // anything defined within an anonymous namespace has internal-linkage,
   // and therefore won't appear in the symbol table of the resulting object