diff --git a/blosc/blosc2.c b/blosc/blosc2.c
index dc73d38e..d774e86a 100644
--- a/blosc/blosc2.c
+++ b/blosc/blosc2.c
@@ -1446,6 +1446,7 @@ int pipeline_backward(struct thread_context* thread_context, const int32_t bsize
 
 
 static int32_t set_nans(int32_t typesize, uint8_t* dest, int32_t destsize) {
+  printf("dins set nans\n");
   if (destsize % typesize != 0) {
     BLOSC_TRACE_ERROR("destsize can only be a multiple of typesize");
     BLOSC_ERROR(BLOSC2_ERROR_FAILURE);
@@ -1457,7 +1458,7 @@ static int32_t set_nans(int32_t typesize, uint8_t* dest, int32_t destsize) {
 
   if (typesize == 4) {
     float* dest_ = (float*)dest;
-    float val = nanf("");
+    float val = nanf("1");
     for (int i = 0; i < nitems; i++) {
       dest_[i] = val;
     }
@@ -1465,7 +1466,7 @@ static int32_t set_nans(int32_t typesize, uint8_t* dest, int32_t destsize) {
   }
   else if (typesize == 8) {
     double* dest_ = (double*)dest;
-    double val = nan("");
+    double val = nan("0");
     for (int i = 0; i < nitems; i++) {
       dest_[i] = val;
     }