diff --git a/loopy/target/pyopencl.py b/loopy/target/pyopencl.py
index 9a6be115c8de22f49aa3a889681af279800a6887..06ff41908d2eb2c2d9fd483e9d1acec5f8e98a62 100644
--- a/loopy/target/pyopencl.py
+++ b/loopy/target/pyopencl.py
@@ -293,7 +293,7 @@ class ExpressionToPyOpenCLCExpressionMapper(ExpressionToOpenCLCExpressionMapper)
 
             complex_prd = binary_tree_mul(0, len(complexes))
 
-            if real_prd:
+            if reals:
                 return p.Variable("%s_rmul" % tgt_name)(real_prd, complex_prd)
             else:
                 return complex_prd