diff --git a/risu.h b/risu.h
index 1b87af2..aa8cc22 100644
--- a/risu.h
+++ b/risu.h
@@ -120,8 +120,8 @@ void reginfo_init(struct reginfo *ri, ucontext_t *uc, void *siaddr);
 /* return 1 if structs are equal, 0 otherwise. */
 int reginfo_is_eq(struct reginfo *r1, struct reginfo *r2);
 
-/* print reginfo state to a stream, returns 1 on success, 0 on failure */
-int reginfo_dump(struct reginfo *ri, FILE * f);
+/* print reginfo state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE *f);
 
 /* reginfo_dump_mismatch: print mismatch details to a stream */
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f);
diff --git a/risu_reginfo_aarch64.c b/risu_reginfo_aarch64.c
index da221d5..0161044 100644
--- a/risu_reginfo_aarch64.c
+++ b/risu_reginfo_aarch64.c
@@ -219,8 +219,8 @@ static void sve_dump_zreg_diff(FILE *f, int vq, const uint64_t *za,
     }
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE * f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE * f)
 {
     int i;
     fprintf(f, "  faulting insn %08x\n", ri->faulting_insn);
@@ -263,7 +263,7 @@ int reginfo_dump(struct reginfo *ri, FILE * f)
             sve_dump_preg(f, vq, p);
             fprintf(f, "\n");
         }
-        return !ferror(f);
+        return;
     }
 
     for (i = 0; i < 32; i++) {
@@ -271,8 +271,6 @@ int reginfo_dump(struct reginfo *ri, FILE * f)
         fprintf(f, "  V%-2d    : %016" PRIx64 "%016" PRIx64 "\n",
                 i, v[1], v[0]);
     }
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE * f)
diff --git a/risu_reginfo_arm.c b/risu_reginfo_arm.c
index 221bd8a..0e179be 100644
--- a/risu_reginfo_arm.c
+++ b/risu_reginfo_arm.c
@@ -161,8 +161,8 @@ int reginfo_is_eq(struct reginfo *r1, struct reginfo *r2)
     return memcmp(r1, r2, sizeof(*r1)) == 0;    /* ok since we memset 0 */
 }
 
-/* reginfo_dump: print the state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE *f)
+/* reginfo_dump: print the state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE *f)
 {
     int i;
     if (ri->faulting_insn_size == 2) {
@@ -179,8 +179,6 @@ int reginfo_dump(struct reginfo *ri, FILE *f)
                 i, (unsigned long long) ri->fpregs[i]);
     }
     fprintf(f, "  fpscr: %08x\n", ri->fpscr);
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
diff --git a/risu_reginfo_i386.c b/risu_reginfo_i386.c
index 18d15ca..f4cf9a3 100644
--- a/risu_reginfo_i386.c
+++ b/risu_reginfo_i386.c
@@ -310,8 +310,8 @@ static char get_vecletter(uint64_t features)
     }
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE *f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE *f)
 {
     uint64_t features;
     int i, j, n, w;
@@ -345,8 +345,6 @@ int reginfo_dump(struct reginfo *ri, FILE *f)
             fprintf(f, "  k%-5d: %016" PRIx64 "\n", i, ri->kregs[i]);
         }
     }
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
diff --git a/risu_reginfo_loongarch64.c b/risu_reginfo_loongarch64.c
index 630d6b2..060715f 100644
--- a/risu_reginfo_loongarch64.c
+++ b/risu_reginfo_loongarch64.c
@@ -159,8 +159,8 @@ int reginfo_is_eq(struct reginfo *r1, struct reginfo *r2)
     return !memcmp(r1, r2, sizeof(*r1));
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE * f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE * f)
 {
     int i;
     fprintf(f, "  faulting insn %08x\n", ri->faulting_insn);
@@ -191,8 +191,6 @@ int reginfo_dump(struct reginfo *ri, FILE * f)
             fprintf(f, "  vreg%-2d    : %016lx\n", i, ri->vregs[4 * i]);
         }
     }
-
-    return !ferror(f);
 }
 
 /* reginfo_dump_mismatch: print mismatch details to a stream */
diff --git a/risu_reginfo_m68k.c b/risu_reginfo_m68k.c
index 18ae1d8..a53244d 100644
--- a/risu_reginfo_m68k.c
+++ b/risu_reginfo_m68k.c
@@ -92,8 +92,8 @@ int reginfo_is_eq(struct reginfo *m, struct reginfo *a)
     return 1;
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE *f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE *f)
 {
     int i;
     fprintf(f, "  pc            \e[1;101;37m0x%08x\e[0m\n", ri->pc);
@@ -114,8 +114,6 @@ int reginfo_dump(struct reginfo *ri, FILE *f)
     }
 
     fprintf(f, "\n");
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
diff --git a/risu_reginfo_ppc64.c b/risu_reginfo_ppc64.c
index 486bbf9..fc69805 100644
--- a/risu_reginfo_ppc64.c
+++ b/risu_reginfo_ppc64.c
@@ -103,8 +103,8 @@ int reginfo_is_eq(struct reginfo *m, struct reginfo *a)
     return 1;
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE * f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE * f)
 {
     int i;
 
@@ -143,8 +143,6 @@ int reginfo_dump(struct reginfo *ri, FILE * f)
                 ri->vrregs.vrregs[i][0], ri->vrregs.vrregs[i][1],
                 ri->vrregs.vrregs[i][2], ri->vrregs.vrregs[i][3]);
     }
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
diff --git a/risu_reginfo_s390x.c b/risu_reginfo_s390x.c
index 9c8fcfd..cbf168e 100644
--- a/risu_reginfo_s390x.c
+++ b/risu_reginfo_s390x.c
@@ -82,8 +82,8 @@ int reginfo_is_eq(struct reginfo *m, struct reginfo *a)
            memcmp(&m->fprs, &a->fprs, sizeof(m->fprs)) == 0;
 }
 
-/* reginfo_dump: print state to a stream, returns nonzero on success */
-int reginfo_dump(struct reginfo *ri, FILE * f)
+/* reginfo_dump: print state to a stream */
+void reginfo_dump(struct reginfo *ri, FILE * f)
 {
     int i;
 
@@ -103,8 +103,6 @@ int reginfo_dump(struct reginfo *ri, FILE * f)
                 i + 8, *(uint64_t *)&ri->fprs[i + 8]);
     }
     fprintf(f, "\tFPC: %8x\n\n", ri->fpc);
-
-    return !ferror(f);
 }
 
 void reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
