diff --git a/src/utilities/device_utils.c b/src/utilities/device_utils.c
index 97f7b74ed..4e325759f 100644
--- a/src/utilities/device_utils.c
+++ b/src/utilities/device_utils.c
@@ -1466,7 +1466,7 @@ hypreDevice_ComplexAxpyn( HYPRE_Complex  *d_x,
                           HYPRE_Complex  *d_z,
                           HYPRE_Complex   a )
 {
-   return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, 1.0);
+  return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, (HYPRE_Complex) 1.0);
 }
 
 /*--------------------------------------------------------------------
@@ -1480,7 +1480,7 @@ hypreDevice_IntAxpyn( HYPRE_Int *d_x,
                       HYPRE_Int *d_z,
                       HYPRE_Int  a )
 {
-   return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, 1);
+  return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, (HYPRE_Int) 1);
 }
 
 /*--------------------------------------------------------------------
@@ -1494,7 +1494,7 @@ hypreDevice_BigIntAxpyn( HYPRE_BigInt *d_x,
                          HYPRE_BigInt *d_z,
                          HYPRE_BigInt  a )
 {
-   return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, 1);
+   return hypreDevice_Axpyzn((HYPRE_Int) n, d_x, d_y, d_z, a, (HYPRE_BigInt) 1);
 }
 
 /*--------------------------------------------------------------------