diff --git a/interface/lapack/laswp.c b/interface/lapack/laswp.c
index 0dde33ae3..6544dbc5b 100644
--- a/interface/lapack/laswp.c
+++ b/interface/lapack/laswp.c
@@ -97,7 +97,7 @@ int NAME(blasint *N, FLOAT *a, blasint *LDA, blasint *K1, blasint *K2, blasint *
 
   blas_level1_thread(mode, n, k1, k2, dummyalpha,
 		     a, lda, NULL, 0, ipiv, incx,
-		     (int(*)())laswp[flag], nthreads);
+		     (int(*)(void))laswp[flag], nthreads);
   }
 #endif
 
diff --git a/interface/lapack/zlaswp.c b/interface/lapack/zlaswp.c
index b77a40985..7bb4a659e 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, (int(*)())laswp[flag], nthreads);
+  blas_level1_thread(mode, n, k1, k2, dummyalpha, a, lda, NULL, 0, ipiv, incx, (int(*)(void))laswp[flag], nthreads);
   }
 #endif