diff --git a/esc.spec b/esc.spec
index 24614d5..e6d6ede 100644
--- a/esc.spec
+++ b/esc.spec
@@ -67,7 +67,7 @@ cd mozilla
 
 %build
 
-%ifarch x86_64 ppc64 ia64 s390x
+%ifarch x86_64 ppc64 ia64
 USE_64=1
 export USE_64
 %endif
@@ -94,7 +94,7 @@ chmod 755 $RPM_BUILD_ROOT/%{escbindir}/esc
 
 mkdir -p $RPM_BUILD_ROOT/%{escdir}
 
-%ifarch x86_64 ppc64 ia64 s390x
+%ifarch x86_64 ppc64 ia64
 USE_64=1
 export USE_64
 %endif