diff --git a/src/qml/jsruntime/qv4global_p.h b/src/qml/jsruntime/qv4global_p.h
index 4b08194..224ddb1 100644
--- a/src/qml/jsruntime/qv4global_p.h
+++ b/src/qml/jsruntime/qv4global_p.h
@@ -96,8 +96,13 @@ inline double trunc(double d) { return d > 0 ? floor(d) : ceil(d); }
 #    undef V4_ENABLE_JIT
 #endif
 #endif
 
+// Gentoo note: disable the JIT due to USE="-jit"
+#ifdef V4_ENABLE_JIT
+#undef V4_ENABLE_JIT
+#endif
+
 // Do certain things depending on whether the JIT is enabled or disabled
 
 #ifdef V4_ENABLE_JIT
 #define ENABLE_YARR_JIT 1