diff --git a/src/image.cpp b/src/image.cpp
index 1ee11f6..77308f4 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -550,6 +550,7 @@ extern "C" void VS_CC imageFileCreate(const VSMap *in, VSMap *out, void *userDat
     VSVideoFormat blank_alpha_format;
     vsapi->getVideoFormatByID(&blank_alpha_format, pfGray8, core);
     d.blank_alpha = vsapi->newVideoFrame(&blank_alpha_format, d.vi.width, d.vi.height, nullptr, core);
+    vsapi->mapSetInt(vsapi->getFramePropertiesRW(d.blank_alpha), "_ColorRange", 0, maReplace);
 
     for (int i = 0; i < 4; i++) {
         uint8_t *ptr = vsapi->getWritePtr(i < 3 ? d.blank_rgb : d.blank_alpha, i % 3);
diff --git a/src/text.c b/src/text.c
index 61c13ae..2f7cd65 100644
--- a/src/text.c
+++ b/src/text.c
@@ -211,6 +211,7 @@ static const VSFrame *VS_CC assGetFrame(int n, int activationReason,
                                                  NULL, core);
 
             assRender(dst, a, vsapi, img);
+            vsapi->mapSetInt(vsapi->getFramePropertiesRW(a), "_ColorRange", 0, maReplace);
             vsapi->mapConsumeFrame(vsapi->getFramePropertiesRW(dst), "_Alpha", a, maAppend);
             vsapi->freeFrame(d->lastframe);
             d->lastframe = dst;