diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
index baacdc369e..d072b9963d 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
@@ -184,8 +184,8 @@ template<>
     }
     // check for sign bit, apply sign extension as needed
     if (ctx.conf.page_table_sign_extension) {
-        code.shl(page, 63 - *ctx.conf.page_table_sign_extension);
-        code.sar(page, 63 - *ctx.conf.page_table_sign_extension);
+        code.shl(page, *ctx.conf.page_table_sign_extension);
+        code.sar(page, *ctx.conf.page_table_sign_extension);
     }
 
     code.jz(abort, code.T_NEAR);