diff --git a/src/target/riscv/asm.h b/src/target/riscv/asm.h
index 67ac14f84..8a2fd491c 100644
--- a/src/target/riscv/asm.h
+++ b/src/target/riscv/asm.h
@@ -17,6 +17,7 @@ static uint32_t load(const struct target *target, unsigned int rd,
 			return ld(rd, base, offset);
 	}
 	assert(0);
+    return 0; // Silence -Werror=return-type
 }
 
 static uint32_t store(const struct target *target, unsigned int src,
@@ -31,6 +32,7 @@ static uint32_t store(const struct target *target, unsigned int src,
 			return sd(src, base, offset);
 	}
 	assert(0);
+    return 0; // Silence -Werror=return-type
 }
 
 #endif
diff --git a/src/target/riscv/riscv-011.c b/src/target/riscv/riscv-011.c
index 6b6666b4d..4f2e3a618 100644
--- a/src/target/riscv/riscv-011.c
+++ b/src/target/riscv/riscv-011.c
@@ -269,6 +269,7 @@ static unsigned int slot_offset(const struct target *target, slot_t slot)
 	LOG_ERROR("slot_offset called with xlen=%d, slot=%d",
 			riscv_xlen(target), slot);
 	assert(0);
+	return 0; // Silence -Werror=return-type
 }
 
 static uint32_t load_slot(const struct target *target, unsigned int dest,