diff --git a/src/core/Runtime.cc b/src/core/Runtime.cc
index 9f1b917..1987a92 100644
--- a/src/core/Runtime.cc
+++ b/src/core/Runtime.cc
@@ -6,9 +6,9 @@ static const std::initializer_list<const char *> Shader_Extensions = {"", ".glsl
 
 static std::string System_Runtime_Dir;
 
-void Runtime::init(const char * argv_0, const char * appname)
+void Runtime::init(const char * executable_path, const char * appname)
 {
-    System_Runtime_Dir = Path::join(Path::dirname(Path::dirname(argv_0)), "share", appname);
+    System_Runtime_Dir = Path::join(Path::dirname(Path::dirname(executable_path)), "share", appname);
 }
 
 std::string Runtime::find(Type t, const std::string & name)
diff --git a/src/core/Runtime.h b/src/core/Runtime.h
index e37983d..1ff8612 100644
--- a/src/core/Runtime.h
+++ b/src/core/Runtime.h
@@ -14,7 +14,7 @@ public:
     };
 
     static std::string find(Type t, const std::string & name);
-    static void init(const char * argv_0, const char * appname);
+    static void init(const char * executable_path, const char * appname);
 
 protected:
     static std::string find_first_under(const std::string & runtime_subpath,
diff --git a/src/jes.cc b/src/jes.cc
index 56b460a..ee5506c 100644
--- a/src/jes.cc
+++ b/src/jes.cc
@@ -11,7 +11,7 @@ int main(int argc, char * argv[])
         return 1;
     }
 
-    Runtime::init(argv[0], APPNAME);
+    Runtime::init(System::executable_path().c_str(), APPNAME);
 
     const char * filename = nullptr;
     if (argc > 1)