diff --git a/openssl-ibmca.spec b/openssl-ibmca.spec
index 9f87d55..51a4e92 100644
--- a/openssl-ibmca.spec
+++ b/openssl-ibmca.spec
@@ -14,6 +14,7 @@ BuildRequires: make
 BuildRequires: gcc
 BuildRequires: libica-devel >= 3.8.0
 BuildRequires: automake libtool
+BuildRequires: openssl
 ExclusiveArch: s390 s390x