diff --git a/RNGL/GLCanvas.m b/RNGL/GLCanvas.m
index fa7720be73d1020cda51977516531c2e79ab8caa..3b8bcfbf961a00aac3b80775ced4849c2e067e91 100644
--- a/RNGL/GLCanvas.m
+++ b/RNGL/GLCanvas.m
@@ -194,7 +194,7 @@ RCT_NOT_IMPLEMENTED(-init)
         
         if (type == GL_SAMPLER_2D || type == GL_SAMPLER_CUBE) {
           uniforms[uniformName] = [NSNumber numberWithInt:units++];
-          if (!value) {
+          if ([value isEqual:[NSNull null]]) {
             GLTexture *emptyTexture = [[GLTexture alloc] init];
             [emptyTexture setPixelsEmpty];
             textures[uniformName] = emptyTexture;