diff --git a/src/lib/ecore_cocoa/ecore_cocoa.m b/src/lib/ecore_cocoa/ecore_cocoa.m
--- a/src/lib/ecore_cocoa/ecore_cocoa.m
+++ b/src/lib/ecore_cocoa/ecore_cocoa.m
@@ -295,7 +295,7 @@
            Ecore_Event_Mouse_Wheel *ev;
            float dx, dy = 0;
 
-           ev = malloc(sizeof(Ecore_Event_Mouse_Wheel));
+           ev = calloc(1, sizeof(Ecore_Event_Mouse_Wheel));
            if (!ev) return pass;
 
            if ([event hasPreciseScrollingDeltas])
diff --git a/src/lib/ecore_psl1ght/ecore_psl1ght.c b/src/lib/ecore_psl1ght/ecore_psl1ght.c
--- a/src/lib/ecore_psl1ght/ecore_psl1ght.c
+++ b/src/lib/ecore_psl1ght/ecore_psl1ght.c
@@ -383,7 +383,7 @@
 {
    Ecore_Event_Mouse_Move *ev;
 
-   ev = malloc(sizeof(Ecore_Event_Mouse_Move));
+   ev = calloc(1, sizeof(Ecore_Event_Mouse_Move));
    if (!ev) return;
 
    mouse_x += x_axis;
@@ -416,7 +416,7 @@
    Ecore_Event_Mouse_Button *ev;
    static unsigned int previous_timestamp = 0;
 
-   ev = malloc(sizeof(Ecore_Event_Mouse_Button));
+   ev = calloc(1, sizeof(Ecore_Event_Mouse_Button));
    if (!ev) return;
 
    ev->window = 0;
@@ -449,7 +449,7 @@
 {
    Ecore_Event_Mouse_Wheel *ev;
 
-   ev = malloc(sizeof(Ecore_Event_Mouse_Wheel));
+   ev = calloc(1, sizeof(Ecore_Event_Mouse_Wheel));
    if (!ev) return;
 
    ev->timestamp = _ecore_psl1ght_get_time ();
diff --git a/src/lib/ecore_sdl/ecore_sdl.c b/src/lib/ecore_sdl/ecore_sdl.c
--- a/src/lib/ecore_sdl/ecore_sdl.c
+++ b/src/lib/ecore_sdl/ecore_sdl.c
@@ -167,7 +167,7 @@
           {
              Ecore_Event_Mouse_Move *ev;
 
-             ev = malloc(sizeof(Ecore_Event_Mouse_Move));
+             ev = calloc(1, sizeof(Ecore_Event_Mouse_Move));
              if (!ev) return;
 
              ev->timestamp = timestamp;
@@ -192,7 +192,7 @@
           {
              Ecore_Event_Mouse_Button *ev;
 
-             ev = malloc(sizeof(Ecore_Event_Mouse_Button));
+             ev = calloc(1, sizeof(Ecore_Event_Mouse_Button));
              if (!ev) return;
 
              ev->timestamp = timestamp;
@@ -216,7 +216,7 @@
           {
              Ecore_Event_Mouse_Wheel *ev;
 
-             ev = malloc(sizeof(Ecore_Event_Mouse_Wheel));
+             ev = calloc(1, sizeof(Ecore_Event_Mouse_Wheel));
              if (!ev) return;
 
              ev->timestamp = timestamp;
@@ -234,7 +234,7 @@
           {
              Ecore_Event_Mouse_Button *ev;
 
-             ev = malloc(sizeof(Ecore_Event_Mouse_Button));
+             ev = calloc(1, sizeof(Ecore_Event_Mouse_Button));
              if (!ev) return;
              ev->timestamp = timestamp;
              ev->window = event.button.windowID;
diff --git a/src/lib/ecore_wayland/ecore_wl_input.c b/src/lib/ecore_wayland/ecore_wl_input.c
--- a/src/lib/ecore_wayland/ecore_wl_input.c
+++ b/src/lib/ecore_wayland/ecore_wl_input.c
@@ -1261,7 +1261,7 @@
 
    /* LOGFN(__FILE__, __LINE__, __FUNCTION__); */
 
-   if (!(ev = malloc(sizeof(Ecore_Event_Mouse_Move)))) return;
+   if (!(ev = calloc(1, sizeof(Ecore_Event_Mouse_Move)))) return;
 
    ev->timestamp = timestamp;
    ev->x = input->sx;
@@ -1379,7 +1379,7 @@
 
    LOGFN(__FILE__, __LINE__, __FUNCTION__);
 
-   if (!(ev = malloc(sizeof(Ecore_Event_Mouse_Button)))) return;
+   if (!(ev = calloc(1, sizeof(Ecore_Event_Mouse_Button)))) return;
 
    if (button == BTN_LEFT)
      ev->buttons = 1;
@@ -1488,7 +1488,7 @@
 
    LOGFN(__FILE__, __LINE__, __FUNCTION__);
 
-   if (!(ev = malloc(sizeof(Ecore_Event_Mouse_Button)))) return;
+   if (!(ev = calloc(1, sizeof(Ecore_Event_Mouse_Button)))) return;
 
    if (button == BTN_LEFT)
      ev->buttons = 1;
@@ -1551,7 +1551,7 @@
 
    LOGFN(__FILE__, __LINE__, __FUNCTION__);
 
-   if (!(ev = malloc(sizeof(Ecore_Event_Mouse_Wheel)))) return;
+   if (!(ev = calloc(1, sizeof(Ecore_Event_Mouse_Wheel)))) return;
 
    ev->timestamp = timestamp;
    ev->modifiers = input->modifiers;
diff --git a/src/lib/ecore_x/xcb/ecore_xcb_events.c b/src/lib/ecore_x/xcb/ecore_xcb_events.c
--- a/src/lib/ecore_x/xcb/ecore_xcb_events.c
+++ b/src/lib/ecore_x/xcb/ecore_xcb_events.c
@@ -609,7 +609,7 @@
      {
         Ecore_Event_Mouse_Wheel *e;
 
-        if (!(e = malloc(sizeof(Ecore_Event_Mouse_Wheel)))) return;
+        if (!(e = calloc(1, sizeof(Ecore_Event_Mouse_Wheel)))) return;
 
         e->timestamp = ev->time;
         e->modifiers = _ecore_xcb_events_modifiers_get(ev->state);
@@ -2524,7 +2524,7 @@
 {
    Ecore_Event_Mouse_Move *e;
 
-   if (!(e = malloc(sizeof(Ecore_Event_Mouse_Move)))) return;
+   if (!(e = calloc(1, sizeof(Ecore_Event_Mouse_Move)))) return;
 
    e->window = win;
    e->root_window = root_win;
@@ -2597,7 +2597,7 @@
    Ecore_Event_Mouse_Button *e;
    Ecore_X_Mouse_Down_Info *info = NULL;
 
-   if (!(e = malloc(sizeof(Ecore_Event_Mouse_Button)))) return NULL;
+   if (!(e = calloc(1, sizeof(Ecore_Event_Mouse_Button)))) return NULL;
 
    e->window = win;
    e->root_window = root_win;
diff --git a/src/lib/ecore_x/xlib/ecore_x_events.c b/src/lib/ecore_x/xlib/ecore_x_events.c
--- a/src/lib/ecore_x/xlib/ecore_x_events.c
+++ b/src/lib/ecore_x/xlib/ecore_x_events.c
@@ -245,7 +245,7 @@
    Ecore_Event_Mouse_Move *e;
    Ecore_Event *event;
 
-   e = malloc(sizeof(Ecore_Event_Mouse_Move));
+   e = calloc(1, sizeof(Ecore_Event_Mouse_Move));
    if (!e)
      return;
 
@@ -306,7 +306,7 @@
    Ecore_Event_Axis_Update *e;
    int i;
 
-   e = malloc(sizeof(Ecore_Event_Axis_Update));
+   e = calloc(1, sizeof(Ecore_Event_Axis_Update));
    if (!e)
      {
         if (axis) free(axis);
@@ -449,7 +449,7 @@
 {
    Ecore_Event_Mouse_Button *e;
 
-   e = malloc(sizeof(Ecore_Event_Mouse_Button));
+   e = calloc(1, sizeof(Ecore_Event_Mouse_Button));
    if (!e)
      return NULL;
 
@@ -617,7 +617,7 @@
      {
         Ecore_Event_Mouse_Wheel *e;
 
-        e = malloc(sizeof(Ecore_Event_Mouse_Wheel));
+        e = calloc(1, sizeof(Ecore_Event_Mouse_Wheel));
         if (!e)
           return;