diff --git a/debian/rules b/debian/rules
index 83aac748..a9b8869b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -129,7 +129,7 @@ else
 	control_vars = '-Vdep:devlibs=libstdc++6-$(GCC_VERSION)-dev'
 endif
 
-ifeq $(shell bash -c "type -p llvm-spirv")
+ifeq ($(shell bash -c "type -p llvm-spirv"))
 LLVM_SPIRV_INSTALLED = no
 else
 LLVM_SPIRV_INSTALLED = yes