diff --git a/utest/test_extensions/test_damin.c b/utest/test_extensions/test_damin.c
index 736921fa3..50bc5a928 100644
--- a/utest/test_extensions/test_damin.c
+++ b/utest/test_extensions/test_damin.c
@@ -351,4 +351,4 @@ CTEST(damin, negative_step_2_N_70){
    double amin = BLASFUNC(damin)(&N, x, &inc);
    ASSERT_DBL_NEAR_TOL(1.0, amin, DOUBLE_EPS);
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/utest/test_extensions/test_dsum.c b/utest/test_extensions/test_dsum.c
index e987c5a42..304619d0a 100644
--- a/utest/test_extensions/test_dsum.c
+++ b/utest/test_extensions/test_dsum.c
@@ -62,6 +62,7 @@ CTEST(dsum, step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    double x[ELEMENTS];
+   x[0]=0.;
    for (i = 0; i < N  * inc; i ++) {
       x[i] = i + 1000;
    }
@@ -243,6 +244,7 @@ CTEST(dsum, c_api_step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    double x[ELEMENTS];
+   x[0]=0.;
    for (i = 0; i < N  * inc; i ++) {
       x[i] = i + 1000;
    }
@@ -400,4 +402,4 @@ CTEST(dsum, c_api_step_2_N_50){
    double sum = cblas_dsum(N, x, inc);
    ASSERT_DBL_NEAR_TOL(50.0, sum, DOUBLE_EPS);
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/utest/test_extensions/test_dzsum.c b/utest/test_extensions/test_dzsum.c
index 5139f59cb..a184ad947 100644
--- a/utest/test_extensions/test_dzsum.c
+++ b/utest/test_extensions/test_dzsum.c
@@ -62,6 +62,7 @@ CTEST(dzsum, step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    double x[ELEMENTS];
+   x[0] = 0.0;
    for (i = 0; i < N  * inc * 2; i ++) {
       x[i] = i + 1000;
    }
@@ -243,6 +244,7 @@ CTEST(dzsum, c_api_step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    double x[ELEMENTS];
+   x[0] = 0.0;
    for (i = 0; i < N  * inc * 2; i ++) {
       x[i] = i + 1000;
    }
@@ -400,4 +402,4 @@ CTEST(dzsum, c_api_step_2_N_50){
    double sum = cblas_dzsum(N, x, inc);
    ASSERT_DBL_NEAR_TOL(0.0, sum, DOUBLE_EPS);
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/utest/test_extensions/test_scsum.c b/utest/test_extensions/test_scsum.c
index 492e1a4ca..8e943de22 100644
--- a/utest/test_extensions/test_scsum.c
+++ b/utest/test_extensions/test_scsum.c
@@ -62,6 +62,7 @@ CTEST(scsum, step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    float x[ELEMENTS];
+   x[0] = 0.0f;
    for (i = 0; i < N  * inc * 2; i ++) {
       x[i] = i + 1000;
    }
@@ -243,6 +244,7 @@ CTEST(scsum, c_api_step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    float x[ELEMENTS];
+   x[0] = 0.0f;
    for (i = 0; i < N  * inc * 2; i ++) {
       x[i] = i + 1000;
    }
@@ -400,4 +402,4 @@ CTEST(scsum, c_api_step_2_N_50){
    float sum = cblas_scsum(N, x, inc);
    ASSERT_DBL_NEAR_TOL(0.0f, sum, SINGLE_EPS);
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/utest/test_extensions/test_ssum.c b/utest/test_extensions/test_ssum.c
index 971a0d2e0..9c5e29728 100644
--- a/utest/test_extensions/test_ssum.c
+++ b/utest/test_extensions/test_ssum.c
@@ -62,6 +62,7 @@ CTEST(ssum, step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    float x[ELEMENTS];
+   x[0] = 0.0f;
    for (i = 0; i < N  * inc; i ++) {
       x[i] = i + 1000;
    }
@@ -243,6 +244,7 @@ CTEST(ssum, c_api_step_zero){
    blasint i;
    blasint N = ELEMENTS, inc = 0;
    float x[ELEMENTS];
+   x[0] = 0.0f;
    for (i = 0; i < N  * inc; i ++) {
       x[i] = i + 1000;
    }
@@ -400,4 +402,4 @@ CTEST(ssum, c_api_step_2_N_50){
    float sum = cblas_ssum(N, x, inc);
    ASSERT_DBL_NEAR_TOL(50.0f, sum, SINGLE_EPS);
 }
-#endif
\ No newline at end of file
+#endif