diff --git a/icicle/src/msm/msm.cu b/icicle/src/msm/msm.cu
index 480c986c4..d6db3d654 100644
--- a/icicle/src/msm/msm.cu
+++ b/icicle/src/msm/msm.cu
@@ -946,7 +946,7 @@ namespace msm {
     }
     bool is_signed = (c == 1) ? false : config.is_signed;
 
-    if (config.is_signed || !config.is_big_triangle) {
+    if (config.is_signed && !config.is_big_triangle) {
       THROW_ICICLE_ERR(
         IcicleError_t::InvalidArgument, "bucket_method_msm: signed msm currently only works with big triangle");
     }