diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24276954..781f63f2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ The **"Breaking Changes"** listed below are changes that have been made in the d
 
 ### Fixed
 - Fix text boxes in the Palette Editor calculating color incorrectly.
+- Fix default object sprites retaining dimensions and transparency of the previous sprite.
 
 ## [5.1.1] - 2023-02-20
 ### Added
diff --git a/src/core/events.cpp b/src/core/events.cpp
index fdce7893..331eb69f 100644
--- a/src/core/events.cpp
+++ b/src/core/events.cpp
@@ -244,6 +244,9 @@ void ObjectEvent::loadPixmap(Project *project) {
         // No sprite associated with this gfx constant.
         // Use default sprite instead.
         this->pixmap = project->entitiesPixmap.copy(0, 0, 16, 16);
+        this->spriteWidth = 16;
+        this->spriteHeight = 16;
+        this->usingSprite = false;
     } else {
         this->setFrameFromMovement(project->facingDirections.value(this->movement));
         this->setPixmapFromSpritesheet(eventGfx->spritesheet, eventGfx->spriteWidth, eventGfx->spriteHeight, eventGfx->inanimate);
@@ -387,6 +390,9 @@ void CloneObjectEvent::loadPixmap(Project *project) {
         // No sprite associated with this gfx constant.
         // Use default sprite instead.
         this->pixmap = project->entitiesPixmap.copy(0, 0, 16, 16);
+        this->spriteWidth = 16;
+        this->spriteHeight = 16;
+        this->usingSprite = false;
     } else {
         this->setFrameFromMovement(project->facingDirections.value(this->movement));
         this->setPixmapFromSpritesheet(eventGfx->spritesheet, eventGfx->spriteWidth, eventGfx->spriteHeight, eventGfx->inanimate);