diff --git a/src/gallium/frontends/clover/core/kernel.cpp b/src/gallium/frontends/clover/core/kernel.cpp
index 3f58973ff05..36a81ee04e1 100644
--- a/src/gallium/frontends/clover/core/kernel.cpp
+++ b/src/gallium/frontends/clover/core/kernel.cpp
@@ -537,6 +537,9 @@ void
 kernel::local_argument::unbind(exec_context &ctx) {
 }
 
+kernel::constant_argument::constant_argument() : buf(nullptr), st(nullptr) {
+}
+
 void
 kernel::constant_argument::set(size_t size, const void *value) {
    if (size != sizeof(cl_mem))
diff --git a/src/gallium/frontends/clover/core/kernel.hpp b/src/gallium/frontends/clover/core/kernel.hpp
index 684aefa29ee..a2264376cce 100644
--- a/src/gallium/frontends/clover/core/kernel.hpp
+++ b/src/gallium/frontends/clover/core/kernel.hpp
@@ -195,6 +195,8 @@ namespace clover {
 
       class constant_argument : public argument {
       public:
+         constant_argument();
+
          virtual void set(size_t size, const void *value);
          virtual void bind(exec_context &ctx,
                            const module::argument &marg);