diff --git a/engine/common/whereami.c b/engine/common/whereami.c
index 31726774..3eb3f086 100644
--- a/engine/common/whereami.c
+++ b/engine/common/whereami.c
@@ -175,7 +175,7 @@ int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length)
   return length;
 }
 
-#elif defined(__linux__) || defined(__CYGWIN__) || defined(__sun) || defined(__serenity__) || defined(WAI_USE_PROC_SELF_EXE)
+#elif defined(__linux__) || defined(__CYGWIN__) || defined(__sun) || defined(__serenity__) || defined(__gnu_hurd__) || defined(WAI_USE_PROC_SELF_EXE)
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -191,6 +191,10 @@ int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length)
 #include <inttypes.h>
 #include <stdbool.h>
 
+#if defined(__gnu_hurd__) && !defined(PATH_MAX)
+#define PATH_MAX 4096
+#endif // defined(__gnu_hurd__) && !defined(PATH_MAX)
+
 #if !defined(WAI_PROC_SELF_EXE)
 #if defined(__sun)
 #define WAI_PROC_SELF_EXE "/proc/self/path/a.out"