diff --git a/sdk/tools/hhpcomp/CMakeLists.txt b/sdk/tools/hhpcomp/CMakeLists.txt
index 50fd03c94ef..a3f7e9d749a 100644
--- a/sdk/tools/hhpcomp/CMakeLists.txt
+++ b/sdk/tools/hhpcomp/CMakeLists.txt
@@ -16,9 +16,6 @@ add_executable(hhpcomp ${SOURCE})
 target_link_libraries(hhpcomp)
 
 if(MSVC)
-    # Disable warning "'x': unreferenced local variable"
-    target_compile_options(hhpcomp PRIVATE "/wd4101")
-
     # Disable warning "'=': conversion from 'a' to 'b', possible loss of data"
     target_compile_options(hhpcomp PRIVATE "/wd4244")
 endif()
diff --git a/sdk/tools/hhpcomp/chmc/chmc.c b/sdk/tools/hhpcomp/chmc/chmc.c
index f96ff11673e..9c0e0217d80 100644
--- a/sdk/tools/hhpcomp/chmc/chmc.c
+++ b/sdk/tools/hhpcomp/chmc/chmc.c
@@ -668,7 +668,9 @@ int chmc_system_done(struct chmcFile *chm)
 	sysp = malloc(16384);
 	if (sysp) {
 		UInt32 val;
+#ifndef __REACTOS__
 		UInt16 code, len;
+#endif
 		const char *entry_val;
 
 		p = chmc_syscat_mem(sysp, &system->version, sizeof(system->version));