diff --git a/main.c b/main.c
index 85b90ca..6e353b9 100644
--- a/main.c
+++ b/main.c
@@ -14,7 +14,7 @@ void disp_pldheader(struct PldHeader *x) {
 
 bool read_pldheader(const char *buffer) {
     int32_t *n = (int32_t*)buffer;
-    struct PldHeader *ph      = (struct PldHeader*)malloc(1);   
+    struct PldHeader *ph      = (struct PldHeader*)malloc(sizeof(struct PldHeader));   
     unsigned int size_offsets = sizeof(uint32_t) * n[0];
     ph -> offsets             = (uint32_t*)malloc(size_offsets);
     if (ph -> offsets == NULL) {