diff --git a/src/libsysprof/sysprof-elf-symbol-resolver.c b/src/libsysprof/sysprof-elf-symbol-resolver.c
index 4135ae50..a38262a1 100644
--- a/src/libsysprof/sysprof-elf-symbol-resolver.c
+++ b/src/libsysprof/sysprof-elf-symbol-resolver.c
@@ -154,7 +154,7 @@ sysprof_elf_symbol_resolver_load (SysprofSymbolResolver *resolver,
            * files as we see them inside the user-space view of the system.
            */
 
-          if (memcmp (ev->filename, "/sysroot/", 9) == 0)
+          if (strncmp (ev->filename, "/sysroot/", 9) == 0)
             filename = ev->filename + 9;
           else
             filename = ev->filename;