diff --git a/src/OpenGL/compiler/OutputASM.cpp b/src/OpenGL/compiler/OutputASM.cpp
index 8477af2..b6b0eef 100644
--- a/src/OpenGL/compiler/OutputASM.cpp
+++ b/src/OpenGL/compiler/OutputASM.cpp
@@ -2859,6 +2859,10 @@
 		{
 			return samplerRegister(operand);
 		}
+		else if(operand->getType().totalSamplerRegisterCount() > 0) // Struct containing a sampler
+		{
+			samplerRegister(operand); // Make sure the sampler is declared
+		}
 
 		switch(operand->getQualifier())
 		{