diff --git a/engines/grim/gfx_opengl.cpp b/engines/grim/gfx_opengl.cpp
index b326a41a311..99b325d3ec4 100644
--- a/engines/grim/gfx_opengl.cpp
+++ b/engines/grim/gfx_opengl.cpp
@@ -752,7 +752,7 @@ void GfxOpenGL::drawEMIModelFace(const EMIModel *model, const EMIMeshFace *face)
 		glEnable(GL_TEXTURE_2D);
 	else
 		glDisable(GL_TEXTURE_2D);
-	if (face->_flags & EMIMeshFace::kAlphaBlend || face->_flags & EMIMeshFace::kUnknownBlend || _currentActor->hasLocalAlpha())
+	if (face->_flags & EMIMeshFace::kAlphaBlend || face->_flags & EMIMeshFace::kUnknownBlend || _currentActor->hasLocalAlpha() || _alpha < 1.0f)
 		glEnable(GL_BLEND);
 
 	glBegin(GL_TRIANGLES);
diff --git a/engines/grim/gfx_tinygl.cpp b/engines/grim/gfx_tinygl.cpp
index f80f649b8b3..0b66068282f 100644
--- a/engines/grim/gfx_tinygl.cpp
+++ b/engines/grim/gfx_tinygl.cpp
@@ -678,7 +678,7 @@ void GfxTinyGL::drawEMIModelFace(const EMIModel *model, const EMIMeshFace *face)
 		tglEnable(TGL_TEXTURE_2D);
 	else
 		tglDisable(TGL_TEXTURE_2D);
-	if (face->_flags & EMIMeshFace::kAlphaBlend || face->_flags & EMIMeshFace::kUnknownBlend || _currentActor->hasLocalAlpha())
+	if (face->_flags & EMIMeshFace::kAlphaBlend || face->_flags & EMIMeshFace::kUnknownBlend || _currentActor->hasLocalAlpha() || _alpha < 1.0f )
 		tglEnable(TGL_BLEND);
 
 	tglBegin(TGL_TRIANGLES);