diff --git a/slang.spec b/slang.spec
index 5031917..53fc7cd 100644
--- a/slang.spec
+++ b/slang.spec
@@ -29,7 +29,7 @@ to recode S-Lang procedures in C if you need to.
 %package slsh
 Summary: Interpreter for S-Lang scripts
 Group: Development/Languages
-Requires: %{name} = %{version}-%{release}
+Requires: %{name}%{?_isa} = %{version}-%{release}
 
 %description slsh
 slsh (slang-shell) is a program for interpreting S-Lang scripts. 
@@ -42,7 +42,7 @@ the S-Lang distribution.
 %package devel
 Summary: Development files for the S-Lang extension language
 Group: Development/Libraries
-Requires: %{name} = %{version}-%{release}
+Requires: %{name}%{?_isa} = %{version}-%{release}
 Requires: pkgconfig
 
 %description devel
@@ -56,7 +56,7 @@ based on the S-Lang extension language.
 %package static
 Summary: The static library for the S-Lang extension language
 Group: Development/Libraries
-Requires: %{name}-devel = %{version}-%{release}
+Requires: %{name}-devel%{?_isa} = %{version}-%{release}
 
 %description static
 This package includes static library for the S-Lang extension