diff --git a/interface/lapack/zlaswp.c b/interface/lapack/zlaswp.c
index 31e08451d..b77a40985 100644
--- a/interface/lapack/zlaswp.c
+++ b/interface/lapack/zlaswp.c
@@ -96,7 +96,7 @@ int NAME(blasint *N, FLOAT *a, blasint *LDA, blasint *K1, blasint *K2, blasint *
   mode  =  BLAS_SINGLE  | BLAS_COMPLEX;
 #endif
 
-  blas_level1_thread(mode, n, k1, k2, dummyalpha, a, lda, NULL, 0, ipiv, incx, laswp[flag], nthreads);
+  blas_level1_thread(mode, n, k1, k2, dummyalpha, a, lda, NULL, 0, ipiv, incx, (int(*)())laswp[flag], nthreads);
   }
 #endif