diff --git a/qpms/ewald.c b/qpms/ewald.c
index 223be1d..7e57795 100644
--- a/qpms/ewald.c
+++ b/qpms/ewald.c
@@ -99,7 +99,7 @@ qpms_ewald32_constants_t *qpms_ewald32_constants_init(const qpms_l_t lMax /*, co
               * pow(0.5, 2*j-1);
             break;
           case EWALD32_CONSTANTS_AGNOSTIC:
-            c->s1_constfacs[y][j] = -2 * ipow(n+1) * M_SQRTPI   
+            c->s1_constfacs[y][j] = -2 * ipow(n+1) * M_SQRTPI  // FIXME: Valgrind invalid write 
               * factorial((n-m)/2) * factorial((n+m)/2)
               * min1pow(j) 
               / (factorial(j) * factorial((n-m)/2-j) * factorial((n+m)/2-j));
diff --git a/tests/ewalds.c b/tests/ewalds.c
index 1709a6d..74d24e9 100644
--- a/tests/ewalds.c
+++ b/tests/ewalds.c
@@ -42,7 +42,7 @@ ewaldtest_triang_params paramslist[] = {
   { 3, {1.1, 0.23}, 2.3, 0.97, 0.5,  30, 30, 1., TRIANGULAR_VERTICAL},
   { 3, {1.1, 0.23}, 2.3, 0.97, 0.9,  30, 30, 1., TRIANGULAR_VERTICAL},
   { 3, {1.1, 0.23}, 2.3, 0.97, 1.3,  30, 30, 1., TRIANGULAR_VERTICAL},
-  { 3, {1.1, 0.23}, 2.3, 0.97, 1.9,  30, 30, 1., TRIANGULAR_VERTICAL},
+  { 6, {1.1, 0.23}, 2.3, 0.97, 1.9,  30, 30, 1., TRIANGULAR_VERTICAL},
 // end:
 //  { 0,  {0, 0}, 0, 0, 0, 0, 0, 0, 0}
 };