diff --git a/libpcscxx.spec.in b/libpcscxx.spec.in
index b041a9e..c25f578 100644
--- a/libpcscxx.spec.in
+++ b/libpcscxx.spec.in
@@ -22,7 +22,7 @@ This package contains only the shared libraries required at runtime.
 
 %prep
 %setup -q
-CPPFLAGS=-std=c++0x \
+CPPFLAGS="-std=c++0x -I/usr/include/PCSC -I/usr/include/p11-kit-1/p11-kit" \
     ./configure --prefix=/usr \
             --docdir=/usr/share/doc/packages/@PACKAGENAME@ \
             --libdir=/usr/%_lib