diff --git a/CMakeLists.txt b/CMakeLists.txt
index ddc6c7e6..21bcb76a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -147,7 +147,7 @@ else()
 endif()
 
 # Define custom "Coverage" build type.
-set(CMAKE_C_FLAGS_COVERAGE "${CMAKE_C_FLAGS_RELWITHDEBINFO} -O0 -DCOVERAGE=1 --coverage -Wno-unused-parameter" CACHE STRING
+set(CMAKE_C_FLAGS_COVERAGE "${CMAKE_C_FLAGS_RELWITHDEBINFO} -O0 -DCOVERAGE=1 --coverage" CACHE STRING
   "Flags used by the C compiler during \"Coverage\" builds."
   FORCE
 )
diff --git a/src/ecmult_impl.h b/src/ecmult_impl.h
index 3776fe73..343963c3 100644
--- a/src/ecmult_impl.h
+++ b/src/ecmult_impl.h
@@ -115,6 +115,7 @@ static void secp256k1_ecmult_odd_multiples_table(int n, secp256k1_ge *pre_a, sec
 }
 
 #define SECP256K1_ECMULT_TABLE_VERIFY(n,w) \
+    (void)w; \
     VERIFY_CHECK(((n) & 1) == 1); \
     VERIFY_CHECK((n) >= -((1 << ((w)-1)) - 1)); \
     VERIFY_CHECK((n) <=  ((1 << ((w)-1)) - 1));