diff --git a/nss.spec b/nss.spec
index b857947..a4961bc 100644
--- a/nss.spec
+++ b/nss.spec
@@ -292,10 +292,12 @@ export NSS_USE_SYSTEM_SQLITE
 # TODO: Investigate as there may be a better solution
 export NSS_DISABLE_GTESTS=1
 
+%ifnarch noarch
 %if 0%{__isa_bits} == 64
 USE_64=1
 export USE_64
 %endif
+%endif
 
 # uncomment if the iquote patch is activated
 export IN_TREE_FREEBL_HEADERS_FIRST=1
@@ -403,10 +405,12 @@ export FREEBL_NO_DEPEND
 BUILD_OPT=1
 export BUILD_OPT
 
+%ifnarch noarch
 %if 0%{__isa_bits} == 64
 USE_64=1
 export USE_64
 %endif
+%endif
 
 export NSS_BLTEST_NOT_AVAILABLE=1