diff --git a/src/coreclr/vm/methodtable.cpp b/src/coreclr/vm/methodtable.cpp
index 6682bc57b0500..636fc3063c9ce 100644
--- a/src/coreclr/vm/methodtable.cpp
+++ b/src/coreclr/vm/methodtable.cpp
@@ -3443,6 +3443,11 @@ int MethodTable::GetLoongArch64PassStructInRegisterFlags(CORINFO_CLASS_HANDLE cl
                         size = STRUCT_FIRST_FIELD_SIZE_IS8;
                     }
                 }
+                else if (fieldType == ELEMENT_TYPE_CLASS)
+                {
+                    size = STRUCT_NO_FLOAT_FIELD;
+                    goto _End_arg;
+                }
                 else if (pFieldStart[0].GetSize() == 8)
                 {
                     size = STRUCT_FIRST_FIELD_SIZE_IS8;
@@ -3534,6 +3539,11 @@ int MethodTable::GetLoongArch64PassStructInRegisterFlags(CORINFO_CLASS_HANDLE cl
                         size |= STRUCT_SECOND_FIELD_SIZE_IS8;
                     }
                 }
+                else if (fieldType == ELEMENT_TYPE_CLASS)
+                {
+                    size = STRUCT_NO_FLOAT_FIELD;
+                    goto _End_arg;
+                }
                 else if ((size & STRUCT_FLOAT_FIELD_FIRST) == 0)
                 {
                     size = STRUCT_NO_FLOAT_FIELD;