diff --git a/spirv_glsl.cpp b/spirv_glsl.cpp
index 931df75d..c8d63042 100644
--- a/spirv_glsl.cpp
+++ b/spirv_glsl.cpp
@@ -9393,6 +9393,8 @@ void CompilerGLSL::propagate_loop_dominators(const SPIRBlock &block)
 			set_dominator(block.false_block, dominator);
 		if (block.next_block)
 			set_dominator(block.next_block, dominator);
+		if (block.default_block)
+			set_dominator(block.default_block, dominator);
 
 		for (auto &c : block.cases)
 			set_dominator(c.block, dominator);