diff --git a/osbase/kmod/meta.go b/osbase/kmod/meta.go
index 1eb2c36..5c5dc11 100644
--- a/osbase/kmod/meta.go
+++ b/osbase/kmod/meta.go
@@ -5,7 +5,6 @@
 
 import (
 	"fmt"
-	"log"
 
 	kmodpb "source.monogon.dev/osbase/kmod/spec"
 )
@@ -44,7 +43,7 @@
 	for _, m := range meta.Modules {
 		for _, dep := range modInfoMap[m.Name].GetDependencies() {
 			if _, ok := modIndices[dep]; !ok {
-				log.Printf("Unknown dependency %q for module %q", modInfoMap[m.Name].GetDependencies(), m.Name)
+				return nil, fmt.Errorf("unknown dependency %q for module %q", dep, m.Name)
 			}
 			m.Depends = append(m.Depends, modIndices[dep])
 		}
diff --git a/osbase/kmod/modinfo.go b/osbase/kmod/modinfo.go
index 42ef446..d211fb5 100644
--- a/osbase/kmod/modinfo.go
+++ b/osbase/kmod/modinfo.go
@@ -48,7 +48,14 @@
 	if len(i["depends"]) == 1 && i["depends"][0] == "" {
 		return nil
 	}
-	return i["depends"]
+	out := make([]string, 0, len(i["depends"]))
+	for _, dep := range i["depends"] {
+		parts := strings.Split(dep, ",")
+		for _, part := range parts {
+			out = append(out, strings.ReplaceAll(part, "-", "_"))
+		}
+	}
+	return out
 }
 
 type OptionalDependencies struct {