diff --git a/src/SPC/builder/linux/LinuxBuilder.php b/src/SPC/builder/linux/LinuxBuilder.php
index 1abda58d..93c28b32 100644
--- a/src/SPC/builder/linux/LinuxBuilder.php
+++ b/src/SPC/builder/linux/LinuxBuilder.php
@@ -156,6 +156,9 @@ class LinuxBuilder extends UnixBuilderBase
         }
         $shared_extensions = array_map('trim', array_filter(explode(',', $this->getOption('build-shared'))));
         if (!empty($shared_extensions)) {
+            if (SPCTarget::isStatic()) {
+                throw new WrongUsageException("You're building against musl libc statically, but you're trying to build shared extensions. Musl libc does not implement `dlopen`, so your php binary is not able to load shared extensions.");
+            }
             logger()->info('Building shared extensions ...');
             $this->buildSharedExts();
         }