diff --git a/Userland/disasm.cpp b/Userland/disasm.cpp
index 3e03a5572e..3cd61907da 100644
--- a/Userland/disasm.cpp
+++ b/Userland/disasm.cpp
@@ -37,6 +37,10 @@ int main(int argc, char** argv)
     }
 
     MappedFile file(argv[1]);
+    if (!file.is_valid()) {
+        // Already printed some error message.
+        return 1;
+    }
 
     X86::SimpleInstructionStream stream((const u8*)file.data(), file.size());
     X86::Disassembler disassembler(stream);
diff --git a/Userland/unzip.cpp b/Userland/unzip.cpp
index 93245c2ae7..7fc6bfd921 100644
--- a/Userland/unzip.cpp
+++ b/Userland/unzip.cpp
@@ -183,6 +183,8 @@ int main(int argc, char** argv)
     }
 
     MappedFile mapped_file { zip_file_path };
+    if (!mapped_file.is_valid())
+        return 1;
 
     printf("Archive: %s\n", zip_file_path.characters());