diff --git a/output/outelf32.c b/output/outelf32.c
index e810198c..4489d401 100644
--- a/output/outelf32.c
+++ b/output/outelf32.c
@@ -1595,7 +1595,7 @@ static void stabs32_generate(void)
          * the source-file, the n_desc field should be set to the number
          * of remaining stabs
          */
-        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, strlen(allfiles[0] + 12));
+        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, stabstrlen);
 
         /* this is the stab for the main source file */
         WRITE_STAB(sptr, fileidx[mainfileindex], N_SO, 0, 0, 0);
diff --git a/output/outelf64.c b/output/outelf64.c
index 19bd8459..41243b1e 100644
--- a/output/outelf64.c
+++ b/output/outelf64.c
@@ -1682,7 +1682,7 @@ static void stabs64_generate(void)
          * the source-file, the n_desc field should be set to the number
          * of remaining stabs
          */
-        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, strlen(allfiles[0] + 12));
+        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, stabstrlen);
 
         /* this is the stab for the main source file */
         WRITE_STAB(sptr, fileidx[mainfileindex], N_SO, 0, 0, 0);
diff --git a/output/outelfx32.c b/output/outelfx32.c
index a9b6957a..3eeb224f 100644
--- a/output/outelfx32.c
+++ b/output/outelfx32.c
@@ -1641,7 +1641,7 @@ static void stabsx32_generate(void)
          * the source-file, the n_desc field should be set to the number
          * of remaining stabs
          */
-        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, strlen(allfiles[0] + 12));
+        WRITE_STAB(sptr, fileidx[0], 0, 0, 0, stabstrlen);
 
         /* this is the stab for the main source file */
         WRITE_STAB(sptr, fileidx[mainfileindex], N_SO, 0, 0, 0);